. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> part of al jazeera america's >> special month long evironmental focus fragile planet >> the drought takes hold with devastating results but now science fights back. >> it will map the water in earth's soil has the potential to be revolutionary. >> satellites tracking water from above. innovation shows water. >> ok, i'll take your word for it. >> a biologist specializing in evolution. techno investigates the new dust bowl. tonight, beyond science, innovative goggles and the story she'll never forget. >> looks like there's another one. hold on. >> that's our team. now let's do some science. >> welcome to techno. we have recently done this drive from l.a. to san francisco. it's beautiful, but in the central valley, you see the farms and signs. >> they basically say no water no jobs. >> california is in a really intense prolonged drought. this is a worldwide thing, all over the globe, there are more extreme weather events. places are getting warmer places are getting drier. it's a pre

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> part of al jazeera america's >> special month long evironmental focus fragile planet

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> part of al jazeera america's >> special month long evironmental focus fragile planet >> hello from al jazeera's headquarters in doha. this is the news hour. coming up: >> hit from the air by a saudi-led coalition facing tough resistance on the ground, tribesmen join force to say fight the houthis. >> the largest refugee camp in the world refugee he is calling on kenya's decision to reconsider their decision to send them all home. >>

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> the united states is in the midst of the worst drug addiction epidemic in its history. but it's not a crisis of illegal drugs. it's one of prescription painkillers - oxycodone, hydrocodone, and other legal narcotics, all related to opium. collectively they are called opioids. >> these are the opioid painkillers. and prescriptions for drugs like these have more than quadrupled over the last 15 years - to the extent that the us now consumes

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >>> this week on "talk to al jazeera", musician, songwriter, producer akon, the senna galees american artist that sold for than 30 million records. >> first i'm a businessman. >> akon is an activist and philanthropist and spend a lot of time

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> monday on "techknow". the agricultural community is in crisis. >> more prolonged drought could become the new normal. >> desperate for solutions. >> we can make clean drinking water, just using the sun. >> conservation, science and hope. >> the snow is really a critical resource. >> techknow's team of experts show you how the miracles of science... >> this is my selfie, what can you tell me about my future? >> can affect and surprise us. >> sharks like affection. >> "techknow". where technology meets humanity. monday, 6:30 eastern. only on al jazeera america. >> this is "techknow." a show about innovations that can change lives. >> the science of fighting a wildfire. >> this is a show about science, by scientists. let's check out our team of hard core nerds. marita davison is a biologist specializing in evolution. tonight, fracking.

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >>> this week on "talk to al jazeera", musician, songwriter, producer akon, the senna galees american artist that sold for than 30 million records. >> first i'm a businessman. >> akon is an activist and philanthropist and spend a lot of time promoting peace in areas congo. he's spending a lot of money to i don't have the quality of life of 1 million africans by bringing them electricity. he doesn't think the continent needs to be saved by the west. >> we are stopping africa from governing itself. they are still foreigners in certain areas that control africa. the singer says america has a problem with race. when i say african-american in america dealing with the issues, my first question is why don't they just go home. >> there's controversy about his performance style and lyrics. >> the women call themed [ bleep ] more than we -- call each other [ bleep ] more than we do. >> i caught up with him in dubai, where we talk business and being an american until america. few artists are ab

. >> thank you, krzysztof, elizabeth plank, and all of our guests until next time, we will see you online. >> the united states is in the midst of the worst drug addiction epidemic in its history. but it's not a crisis of illegal drugs. it's one of prescription painkillers - oxycodone, hydrocodone, and other legal narcotics, all related to opium. collectively they are called opioids. >> these are the opioid painkillers. and prescriptions for drugs like these have more than quadrupled over the last 15 years - to the extent that the us now consumes more than 80 percent of the global supply of these drugs. >> overdoses from prescription opioid drugs now kill nearly seventeen thousand americans every year. that's one overdose death every thirty minutes. >> the overdose rate which might have been 1 or 2 a month in our emergency department is now more like 3 or 4 or 5 if not more than that, in a 24-hour period. >> that's a massive increase. >> massive. >> over the past 10 years, we've had more than 125,000 americans lose their lives to painkiller overdose deaths. >> the food and drug administra