in 1850, there was one greenhouse, a gothic-style greenhouse. it would have been serviced in the winter by coal or when heated stoves to keep it warm -- would heated -- wood heated stoves to keep it warm. because many of the plants were tropical plants, large specimens of tropical ferns, tropical psych ads -- tropical cicads, and many large plans from equatorial latitudes of the pacific rim. it would have been a very exotic lace, exotic -- exotic place, exotic in terms of agriculture, gothic greenhouses were not readily found in the country at that time. glass greenhouses were not something that were much in the public domain at that time. and these plants would have been outlandish, almost alien to temperate, eastern americans who almost certainly had not seen or traveled to tropical environments where you would see these plants in nature. to my right just behind us is one of the few plants that still exists from the time of the u.s. tannic gardens placement upon this block of land. it is a special treat call day zelcova. in the old days, it wa

so in 1850, there was one greenhouse. it was a gothic style greenhouse it would have been serviced in the winter by cole or wood heated stoves in order to keep it warm because the plants that it contained were in many cases actually tropical plants some of the plants we know were tropical ferns large specimens of tropical ferns large specimens of tropical cycads, and many other plants from the we would call the the equatorial latitudes of the pacific rim and and it would have been a very exotic place. it would have been exotic in terms of architecture. gothic greenhouses were not something that we're readily available or found throughout the country at that time glass houses. just on their own. we're certainly not something that were much into public domain at that time and certainly these plants would have been outlandish almost alien to temperate eastern americans who you know almost certainly had not seen or traveled to the tropical environments where you would see these plants in nature. and so over to my right just b

so in 1850 there was one greenhouse, a gothic style greenhouse where it would have been serviced in the winter by coal or wood heated stoves. better to keep it warm. because the plants that it contained were in many cases actually tropical plants. some of the plants were tropical ferns. large specimens of tropical ferns. large specimens of tropical cycles ads. what we would call the equatorial latitudes of the pacific rim. it would have been an exotic place. in terms of architecture. greenhouses were not something that were readily available or found throughout the country at that time. glasshouses we're certainly not something that we're much in the public domain at that time. certainly in these plants would have been outlandish, almost alien to temperate eastern americans who almost certainly had not seen or traveled to the tropical environments where you would see these plants. over to my right behind us is actually one of the very few plants that still exists from the time of the u.s. botanic b.a.r.t. gardens upon this block of land. it's a special tree called his al-qaida. in the o

when you have a normal greenhouse business, it's much less expensive to build a normal greenhouse than build one of ours. on the other hand, to run a normal greenhouse is much more expensive than to run one of ours. the life cycle of one of ours--we are building real estate, real estate where you can grow food at the same time. a greenhouse, you build them, you take them away after 20, at the most 30 years, and then you build a new one. so we are just rationalizing an old industry and making it like a second generation greenhousing. and when you do things like this, when you automize and industrialize an old system, you always have higher investment costs and lower costs at the end. so the payback time in linkoping, for example, it's about 5 years on the whole building. so the business case for this is really, really good. you also have to remember that the cost of a tomato--if you buy a tomato at the grocery store, about 60% is middlemen cost--transportation and the store selling the tomato. we're taking all that away. we're selling directly to the consumer. so even if we have to inve

with its huge greenhouses the netherlands is the 2nd largest food exporter in the world and they take care of their resources. vegetable growers here need much less water to. tomatoes and elsewhere thanks to new eric ation techniques. our research is focusing on. to produce more food but at the same time to do it with as inputs so we need to produce more nutritious food more safe food and this challenge more with less and better is really the overarching feeling of our research programs. this is how daily life looks in the spanish region of i married. under this sea of plastic tarp and then lies europe's largest special garden. artificially irrigated grown for export. millions of tons of tomatoes peppers cucumbers and other varieties are shipped from here mostly to germany. but intensive cultivation has its price. pesticides and fertilizers contribute to the fact that hardly anything grows here outside the greenhouses. and the spanish french who are farmers are running out of water the whole area is trying out. the situation in africa is even more extreme especially south of the sahar

has accounted for less than one percent of the historic greenhouse gas emissions. the richest economies. 3 percent and emissions. we have in place the cleanest. in the world marked by renewed investments in solar wind hydro and biomass based energy we are a pioneer in company a pioneering country in its emanation of biofuels renewable fuels such as ethanol which help clean up our urban centers in the countryside we have promoted a green revolution based on science and innovation we produce more using less resources which makes brazilian agriculture one of the most sustainable practices on the planet we are proud to. 84 percent of the brazilian amazon them by all and 12 percent of the earth drinking water resources as a resource as a result in the past 15 years alone we have avoided the emission of more than 7800000000 tons of carbon into the atmosphere. in the light of our common but differentiated responsibilities we continue to collaborate towards global efforts against climate change. we are one of the key to developing countries to adopt and to really affirm a

we are launching a new set of trajectories for countries that are high greenhouse gases gas -- greenhouse gas and matters -- emitters. there was lots of discussion in our planned and within the g20 of things like carbon pricing and the taxation of carbon. by midyear, we hope to have 50 countries with world bank financing -- excuse me -- and to do the vaccination programs. for the first time in our history, we topped 100 billion in commitments over a 12 month period. there has been a surge in growth in the world bank groups' activities in response to covid. we are making some progress on transparency, collateralization of debt remains a problem and nondisclosure clauses by some creditors remains a problem. there is full recognition of the debt problem facing poorer countries, so i welcome that. i mentioned earlier -- we have made progress on sudan, which is important. our programs are expanding rapidly. there is more work to be done and we work closely with the imf on that. with that, i will turn to you, questions. >> 90 very much. the first question we have, following on your remarks, how

aster there was a lot of interest in these new greenhouses because it is possible to produce all year round regardless of external influences or from all who push thanks to our methods the farmers have a stable production without damage from insects or worms because. and of course the system is sustainable when you can run these vegetable factories in the middle of the city and produce local food as needed from the top of. the contrast agriculture and the fields. once again the farmers lack watch or a lot of water and the weather is much too hot temperatures of up to 40 degrees celsius can dry up the soil to 2 metres deep. large parts of germany are affected by trout in the summer. the result can be the total loss of the harvest was high financial losses. hence heneage can harden and brandenburg as one of the farmers who suffer he grows potatoes and corn. his farm is located in an area with light dry soil without the help of expensive eric ation systems nothing would grow on his farm. the water already needs to be pumped from deep underground and climate experts predict that even more

with its huge greenhouses the netherlands is the 2nd largest food exporter in the world and they take care of their resources. vegetable growers here much less water to. jimmy toes and elsewhere thanks to new era geisha techniques. our research is focusing on. to produce more food but at the same time to do it with less inputs so we need to produce more nutritious food more safe food and this challenge more with less and better is really the overarching theme of our research programs. this is how daily life works in the spanish region i'm here. under this sea of plastic tarp and then slice europe's largest special car. artificial irrigated grown for exports. millions of tons of tomatoes peppers cucumbers and other varieties and shipped from here mostly to germany. but intensive cultivation has its price. pesticides and fertilizers contribute to the fact that hardly anything grows here outside the greenhouses. and the spanish french who are farmers are running out of water. the whole area is drying out. the situation in africa is even more extreme especially south of the sahara. there

was inventive will grow up and this is my aquaponics system he proudly explains and his small greenhouse he is trying out a new form of agriculture aquaponics here fisher bread and large tanks. has 250 sturgeon's and his facility. with. the fish excrement is pumped out and used as fertilizer for various vegetables the water purifier by the plant is then returned to the fish tanks. from rice farmer to modern aquaponics farmer almost all vegetables thrive here all year round and are independent of climate changes the greenhouses even withstood an earthquake . the neighboring farmers have already suffered this year it rained too much and their plants did not get enough sun. i kid out over can still carry his harvest to the market. and dreams of an even bigger plant. such as this one in the show now back district in berlin. and the grounds of an old industrial complex greenhouses professional growing in the middle as the city. groups of visitors from all over the world come here to learn about the goings on inside. this is also an aquaponics farm but on a grand scale. the current product cap

was inventive will grow up and this is my aquaponics system he proudly explains and his small greenhouse he is trying out a new form of agriculture aquaponics here are sure bread and large tanks ikea easy money has 250 sturgeon's and his facility. with. the fish excrement is pumped out and used as fertilizer for various vegetables the water purifier by the plant is then returned to the fish tanks. from rice farmer to modern aquaponics farmer almost all vegetables thrive here all year round and are independent of climate changes the greenhouse says even withstood an earthquake the neighboring farmers have already suffered this year it rained too much and their plants did not get enough sun. i kid out over can still carry his harvest to the market. and dreams of an even bigger plant. such as this one in the show never back to strict in berlin. and the grounds of an old industrial complex greenhouses professional growing in the middle of the city. groups of visitors from all over the world come here to learn about the goings on inside. this is also an aquaponics farm but on a grand scale. t

we think 4% of the global greenhouse gas emissions come from the poorest countries. so one way they can benefit as if the rest of the world is doing more, that reduces their vulnerabilities and provides resources to adapt to the change. second, the direct job aspect of adapting to changing climates and also providing food security within regions. those are going to be big and important from a job creation stand. -- standpoint. i want to emphasize the importance of jobs, populations are growing. -- is allowing for job creation. and also, countries are preparing for the recovery, and allowing their economies to change -- -- that means better education and health care systems. the world bank commitments grew a record amount in percent in dollar terms in 2020. we were up 65% in terms of commitments. that's a record. we were continuing to expand the commitment capacity of the bank in the acceleration of the next cycle. all this goes together to the idea that we are trying to achieve transformative, scalable change for people who live in poor countries and that can take th

with its huge greenhouses the netherlands is the 2nd largest food exporter in the world and they take care of their resources. vegetable growers here much less water to. tomatoes and elsewhere thanks to new era geisha techniques . our research is focusing on. to produce more food but at the same time to do it with less imports so we need to produce more nutritious food more safe food and this challenge more with less and better is really the overarching feeling of our research programs. this is how daily life knocks in the spanish region i'm mary. under this sea of plastic tarp and then lies europe's largest pressure cooker. artificially irrigated grown for exports. millions of tons of tomatoes peppers cucumbers and other varieties are shipped from here mostly to germany. but intensive cultivation has its price. pesticides and fertilizers contribute to the fact that hardly anything grows here outside the greenhouses. and the spanish french who are farmers are running out of watchers the whole area is drying out. the situation in africa is even more extreme especially south of the saha

sets out on the road to cut greenhouse gases in half by the end of this decade. that is where we are headed as a nation, and that is what we can do if we take action to build an economy that is prosperous, fair and clean for the entire planet. these steps will set america on a path for no emissions economy by 2050. >> an economy that is more prosperous, favor and cleaner. >> you cannot create a sort of fantasy economy this way. this is going to destroy huge massive economic activity because energy prices are going to go up. when energy prices go up, the price of everything goes up. the whole biden package, when you look at it, every piece of it will take economic activity out of the economy. it creates a lot of jobs when you build a wind factory or solar factory, but it also destroys a lot of jobs from the plants closing prematurely, that have a big investment that is stranded. it will create huge economic devastation, and the idea -- president biden, i'm sorry to say, his understanding of economics is at a fairly low level. it's about the same level as trump's u

just science modifying our climate isn't hubris in iceland researchers have already timed greenhouse gases into stuff. then you can see sort of white spots and that's what this is a to be injected into the part of the reservoir that's the solution to apply definitely in my opinion this to. light a large scale. scientists want to interfere with the arts processes. can geo engineering save us not just by getting harmful c o 2 out of the atmosphere but also by cooling our planet. we're on our way to meet some researchers pursuing radical i.d.'s. i worry that climate change has become a kind of political abstraction people have lost track of the drive to protect their bar but they love david keith of harvard university as one of the most controversial climate researchers believes it's high time we had an emergency plan his idea is to create a sort of screen using dust particles which would reflect the sun's rays weakening or even hold in global warming. first big pilot project names copecks keeps being postponed and there's still too much opposition. what it hears is that something that

not to mitigate the greenhouse effect itself. he wants to influence the oceans in such a way that they absorb greenhouse gases from the atmosphere and so reduce the very thing that causes temperatures to rise. as a naked guy so do you do trust us just i'm excited about the idea some listen to the many people it might sound a bit like playing god let's but after all and change so much on land do you feel they were wildly active and don't think twice about land clearing here or creating another manmade ecosystem their system all forward but when it comes to the sea we find it hard to say why we shouldn't make sensible changes for this. the oceans are already a gigantic c o 2 reservoir 50 times larger than the atmosphere they already absorb a quarter of our greenhouse gases is that the limits of the oceans potential or is it possible to make them do a little more. it's like revisit our head some international research group of 60 scientists and technicians they want to understand how climate change is affecting the special current s

you can take the greenhouse gas emissions out of natural gas. you can use that, goes greenhouse gas to create another form of energy which is hydrogen. you can create hydrogen from clean sources, it is called green hydrogen. it is all sorts of technology solutions to be able to reduce greenhouse gas emissions, all of it will have to be put into place. all of which create jobs. the administration is reviewing all of this and it is not like we had the last word because you and i have talked about methane emissions and epa is the regulator of this. we are looking at all of this, we want to make sure we want to keep and create jobs. >> the secretary makes a roger goo good point. the good news is technologies evolving and the markets are requiring it and everyone oil and gas companies and coal companies are asking for regulations on methane. >> and -- >> i am sorry, there are also many of those gas companies are creating their own goals because they see where the world is going. >> we are going to stay on this topic but i want to bring in another urn

japan brazil and canada announced new targets to slash greenhouse emissions by 2030. it's the only way to overcome the challenges people face in every part of our work. and while democrats celebrate renewed promises, america is ready to ramp up our climate ambition. climate activist greta thunberg slammed what she called hypothetical goals. if we are to live up to our promises and commitments in the past agreements. >> we have to end fossil fuel subsidies at a hearing on fossil fuels bird demanded congress take more aggressive action to keep temperatures from rising to get booked between what we are doing and what action needs to be done in order to stay below the 1.5 degree celsius targets is widening but republicans call her and the administration's goals on reasonable. they're relying and unicorns and rainbows. instead of reality in policy right now. the majority of republicans oppose president biden's environmental policies included in his 2 trillion dollar infrastructure package is effort by the far >> we make our economy and do away with affordable energy while

china is the world's biggest emitter of greenhouse glass -- greenhouse correct -- greenhouse gases.ing this jab at the united states. >> china has committed the move from carbon peak to carbon neutrality and a much shorter times been then might take many developed countries. >> weeks after the u.s. and russia leveled sanctions, russian leader vladimir putin says he takes international commitments seriously like kyoto and paris, hinting the united states does not. >> russia has reduced its greenhouse gas emissions to a greater extent than many other countries. >> biden faces domestic challenges implementing his green economy. oil, gas and chemical companies spent more than $100 million last year. lobbying u.s. lawmakers to keep fossil fuel vehicles on the road. speaking virtually before a congressional panel, greta thunberg vowed to hold lawmakers accountable if they do not change. >> i don't believe for a second you will actually do this. the climate crisis does not exist in the topic of day today. since it does not exist in the general level of awareness is absurdly low, you will s

it wants to up the pace of carbon cuts and would like to see greenhouse gas emissions halved by 2030. the consequences of climate change. and it wants richer countries to come up with £100 billion a year to help poorer countries adapt and make the transition to a lower—carbon economy. now, that's a lot of cash and it is an ambitious agenda, and just like with your family, it's very hard to get everyone to agree, but that is the challenge for this conference in glasgow in november this year. now, lockdown during the pandemic has given some of us a renewed interest in the natural world around us, perhaps because we've had no choice but to spend more time in our garden or local park. and less pollution, clear skies permitting, has made it easier for us to spot notable events in the night sky. now, last year's highlight was in december, the great conjunction, the closestjupiter and saturn have appeared in the night sky in 800 years. so we thought we'd have a look at what's coming up this year, and joining me is bbc weather presenter, elizabeth rizzini, who also provides forecasts for the

the united states sets out on the road to cut greenhouse gases in half and half by the end of this decade. sam is a this is al jazeera live from doha also coming up russia says it's pulling back troops from its border with ukraine but the government in kiev says it's still monitoring the situation closely. and india reports a global recall of more than 314000 new coronavirus infections the country struggles with oxygen supplies and beds. new u.s. president joe biden has pledged by 2030 america will cut its greenhouse gas emissions in the hof he made the announcement at the opening of a virtual white house climate summit brought together leaders from 40 nations in an effort to speed up global efforts and avert the looming crisis by the invalid america will not wait to act the cost of doing nothing is only growing. by maintaining those investments and putting these people to work the united states sets out on the road to cut greenhouse gases in half and half by the end of this decade that's where we're headed as a nation and that's what we can do if we take action to build an economy that's

greenhouse gas emissions in half 2030. is that achievable and what would it take to reach that goal? guest: i suppose it is achievable if we have a commanding control economy or we have a commanding control economy, so people were told what they had to do. the fact is we have a huge energy system, and huge energy resources. when you want to change things, it is hard to do anything except incrementally. that is because we have got over 330 million people values a lot of electricity, most of them drive a lot. the idea we should cut our greenhouse gas emissions by 50% in nine years is preposterous. unless you want to devastate the economy and make -- especially make poor people poor. people -- poorer. people in the lower income bracket spend much higher percentage of incomes on energy then better off people. if you want to really devastate the economy, you could do it. given our current situation, assuming we will not have a command and control economy is just preposterous. host: this is president biden yesterday from the sum

with its huge greenhouses the netherlands is the 2nd largest food exporter in the world and they take care of their resources. vegetable growers here much less water to grow tomatoes than elsewhere thanks to new era cation techniques. our research is focusing on. to produce more food but at the same time to do it with less inputs so we need to produce more nutritious food more safe food and this challenge more with less and better is really the overarching theme of our research programs. this is how daily life looks in the spanish region of our mary. under this sea of plastic tarp and nice europe's largest freshwater garden. artificially irrigated grown for exports. millions of tons of tomatoes peppers cucumbers and other varieties are shipped from here mostly to germany. but intensive cultivation has its price. pesticides and fertilizers contribute to the fact that hardly anything grows here outside the greenhouses. and the spanish vegetable farmers are running out of water the whole area is drying up. the situation in africa is even more extreme especially south of the sahara. there

with this huge greenhouses the netherlands is the 2nd largest food exporter in the world and they take care of their resources. vegetable growers here much less water to. jamais toes and elsewhere thanks to new eric ation techniques. our research is focusing on. to produce more food but at the same time to do it with less inputs so we need to produce more nutritious food more safe food and this challenge more with less and better is really the overarching theme of our research programs. this is how daily life knocks in the spanish region i marry. under this sea of plastic tarp and then slice europe's largest special card. artificially irrigated grown for export. millions of tons of tomatoes peppers cucumbers and other varieties are shipped from here mostly to germany. but intensive cultivation has its price. pesticides and fertilizers contribute to the fact that hardly anything grows here outside the greenhouses. and the spanish vets were farmers are running out of watcher the whole area is drying out. the situation in africa is even more extreme especially south of the sahara. there i

it represents 47% to have the greenhouse gas emissions associated with ouriet.se that's those three. and beef is 40% of the emissions associated with our diet. so beef is a big contributor here in the u.s. where we consume such large quantities of it. >> reporter: dr. heller, let me ask you, because you grew up on a livestock farm, we may point out, what do you make of how the conversation has unfolded, the life it's taken on right now. >> yeah, i think it's an important conversation for us to be having. i find it's a bit unfortunate that the conversation gets pushed to these extremes because as we're demonstrating here there are real opportunities in, you know, relatively moderate changes in our diets in contributing to this climate crisis that we're currently a part of, and contributing to the solution to that climate crisis. >> reporter: that is dr. martin heller of the center for sustainable systems at the university of michigan. thank you so much for your time. >> thank you. >> reporter: the red meat conspiracy is just one of a number of myths circulating o

our gun's overall greenhouse -- as that has happened, our country's overall greenhouse gas emissions have gone down. it does not talk about the wage gap between natural gas sector jobs and so-called green jobs. as "politico" reported this week, the median wage for solo workers is $24.48 an hour compared with $30.33 for those employed by the natural gas sector, which amounts to a roughly $12,000 annual wage gap. in yesterday's statement, the administration showed its cards for its next step. passage of this resolution would lay the groundwork for a planned regulatory war on oil and gas. according to the administration, today's resolution, and i quote, clears the pathway for e.p.a. to evaluate opportunities to promulgate even stronger standards under section 11 of the clean air act to address dangerous methane and other pollution from both new and existing sources across the oil and gas sector. that's right. they want to come forward wb even stronger -- with even stronger clean air sectors than the obama administration did. before starting a rulemaking to ask public comments, the biden

the funding invests in programs that help reduce greenhouse gas emissions including $100 million for air quality grants to state and tribes to tackle emissions on the state and local levels. much like climate change, environmental justice underpins this work as well. the pandemic ignited the communities of color and low income communities who already bear the burden, the highest burden of pollution and suffer high rates of mortality from heart and lung disease and now covid-19. it invests $936 billion towards new accelerating economic justice initiatives that will help create jobs, clean up pollution and implement the initiative to advance racial equality. america's most contaminated land reduced emissions of greenhouse gas from some existing and abandoned infrastructure also relies on this improvement. the chairman, what i would like to say and members of the subcommittee, the budget will help ensure the epa came into the interconnected health and environmental crisis we face, lift up communities that have long been left behind and puts the nation on a prosperous economic path of re

and as many of you know, methane is an extremely potent and dangerous greenhouse gas. but these investments are really just a down payment on what we need to as a nation. and the american jobs project will take us the rest of the way. and i want to emphasize the -- because i've been meeting with so many stakeholders on this, the true importance of ensuring that 40% of the benefits of the american jobs plan go to communities that have been left behind or unseen, people who have been in the shadows of power plants, and whose children have to gasp to breathe or use an inhaler. we need to remedy a moral wrong and make those investments. and the american jobs plan will allow us to do that. it's a once in a century investment to seize a once in a century opportunity. that's what the people elected joe biden to do, and we've waited far too long to do it. so we're going to get it done, and we're going to put america to work, and i'm happy to take any questions. zeke: thank you, secretary. if i can shift gears a little bit, one of the things in the president's infrastructure pa

just science modifying our climate is it hubris in iceland researchers have already turned greenhouse gases into stone on then you can see sort of bright spots and that's what this is to do we inject it into the pilot reservoir that's the solution to a definitely in my opinion this would be one of the solutions that light a large scale scientists want to interfere with the arts processors plan. a layer can geo engineering save us not just by getting harmful c o 2 out of the atmosphere but also by cooling our planet. we're on our way to meet some researchers pursuing radical i.d.s. . i'm worried that climate change has become a kind of political abstraction evil has lost track of the drive to protect their part but they lots. of harvard university has one of the most controversial climate researchers in believes it's high time we had an emergency plan is idea is to create a sort of screen using dust particles which would reflect the sun's rays weakening or even holding global warming here 1st big pilot project names copecks keeps being postponed and there's still not too much oppositio

the united states sets out on the road to cut greenhouse gases in half and half by the end of this decade. russia says it's pulling back troops from its border with ukraine but the government in kiev says it's still monitoring the situation closely. india reports a global recall of more than 314000 new coronavirus factions made to struggle for hospital beds and oxygen supplies a funeral is to be held for a young black man who was shot dead by a police officer will be live in the u.s. city of minneapolis. and in sport around madrid's president insists the european super league remains on standby florentine president said it's completely wrong to believe the project is punished. we begin this news with the climate crisis and a new goal for the 2nd biggest polluter in the world u.s. president joe biden has pledged to cut greenhouse gas emissions by more than half by 2030 he made the announcement the opening of a virtual white house climate summit that's brought together leaders from 40 nations on it's all in an effort to speed up global efforts and virt a looming crisis biden says the u.s. w

the united states sets out on the road to cut greenhouse gases in half and half.

so in some senses, the warming of climate, because of increasing greenhouse gases, is causing a veryme more wet. last october, the uk had its way to stay ever recorded. the uk met office says such a deluge without human—induced climate change should happen once every 300 years but by the end of this century under a medium greenhouse gas emissions scenario, it could happen every 30 years. later this year, leaders from around the world will gather here in the uk for the latest united nations climate change summit, cop26, having been postponed from last year due to the pandemic and without —— with pressure growing to further cut carbon emissions to illuminate little warming, it promises to be the most important meeting since the paris climate accord was signed in 2015. that landmark deal rocked a commitment to pursue efforts to limit the global temperature increase to 1.5 celsius above preindustrial levels. since then, the usa under donald trump became the usa under donald trump became the first nation to withdraw from that agreement. we don't want other leaders and other countries laug

pledges to cut its greenhouse gas emissions in half by the end of the decade president biden made that pledge at the white house where he began posting a virtual climate summit today with more than 48 world leaders can biden deliver on his promise and one about china india and brazil also coming up. a grief stricken family bids farewell to the u.s. black man who was shot dead by police during a traffic stop the officer says that she mistook her gun for a taser plus an about face or is it orders its troops back home after massive drills at ukraine's border tensions remain high after what was the biggest regional military buildup in years and in the years pandemic pain the country sets another global record for the new coated 19 cases hospitals are overwhelmed patients are dying from a shortage of what they need most to survive oxygen. i'm off to our viewers on p.b.s. in the united states and to all of you around the world welcome today is earth day and the united. is trying to make it count us president biden today pledged to cut u.s. carbon emissions in half by the end of the decade it

president joe biden is pledging to cut america's greenhouse gas emissions by more than half by 2030 he made the announcement at the opening of a virtual white house climate summit that has brought together leaders from 40 nations all in an effort to speed up global efforts and the verge a looming crisis by the invalid america will not wait to act and the cost of doing nothing is only growing. by maintaining those investments and putting these people to work the united states sets out on the road to cut greenhouse gases in half and half by the end of this decade that's where we're headed as a nation and that's all we can do if we take action to build an economy that's not only more prosperous but healthier fare and cleaner for the entire planet you know these steps will set america on a path of net 0 emissions economy by no later than 2050 but the truth is america represents less than 50 percent of the world's emissions no nation can solve this crisis on our own as i know you all fully understand all of us all of us and particularly those of us who represent the world's largest economie

and well cletus listen to those who think we're powerless to do anything about this greenhouse effect are forgetting about the white house effect. this is more than 30 years ago. apparently the world was ready to act on clothes. but something happened. a doubling of the c o 2 content of the atmosphere will produce a tremendous greening of the planet or. in the years following james hansen speech critics appear on t.v. the speculations about future warming have no good scientific basis. critics who question climate change the way to end this global warming thing it sounds like a scam. well i think you're seeing it now. this is one of them. i spent most of my time in newspapers and magazines and on t.v. and radio to argue against climate action against panic. the economy would actually improve if we have a doubling of background greenhouse gas how can it improve well because we might have a longer growing season i'm fairly glib i'm fast on my feet. cool on t.v. and i also do my homework. in the years i have to james hansen speech jerry taylor was hired by the think tank cato my name is