all ships and planes can transport flora and fauna into eco systems where they don't belong awful think you are in a fight for survival between species the impact and the devastated. fisherman outs before dawn carrying their trade in the gulf of god is. the bay on tunisia's east coast is around a 100 kilometers long in recent times the fishermen have had to stray even further from the coast to catch fish period about darkness and i've been a fisherman for 38 years and a lot has changed in that time of the call for 20 years ago we used to catch loads of prawns but in recent years there have been repeated events that have reduced our catch the latest problem was the blue crab they wiped out everything with the grass . the 1st blue crabs was supported here at the end of

2014 it's a species that was previously unknown in tunisia the numbers increased rapidly and within 8 months the crabs had become of you menace they would cut the fishing nets eat the fish and deval anything else they could find they became such a problem that the fisherman nicknamed them dyess after the notorious militant group islamic state the blue crab is native to the india pacifist region they came here via the red sea and the suez canal like most of the roughly 1000 non-native species that have rich the mediterranean at's tunisia's national institutes of marine sciences and technology also ban abdallah and her team is studying the blue crabs. the scientists they can to learn more about this destructive species how fast do the crabs grow how quickly do they reproduce and how do they

impact other species when they arrive in a new area to help answer these questions they're analyzing the constants of the crab stillman. how come you didn't live crab is an extremely verey should species. have eaten the crabs are basically insatiable they'll feed on all kinds of prairie. prawns for example also eat several of padds like squid if i was on the fish and they prey on the fish that live in the gulf of course and for the fishing industry. but the blue crab could also pose a threat to another much larger marine animal the sea turtle the mediterranean is home to 3 species of turtle all of which are endangered they got her in the gulf of gabbers to feed and to spend the winter to the north island is an

important nesting ground for the log ahead turtle which lays its eggs at just a few sites on the island just a few kilometers away on the mainland hatem is currently being cared for the adult female is more than 30 years old she's mount norrish and has a large fishing hook inside her fate suffered by many sea turtles the scientists here say injuries from boat propellers are also common they found these species of plastic in hatem species the pollution of the seas is another huge threat so the turtles around 2 thirds of the animals examined here have plastic inside their bodies the scientists record and keep everything they find. if you live in

a sea turtles are very important for the marine ecosystem that will they maintain the balance in the food chain communication and the loggerhead turtle for example it's everything it will eat crabs and mollusks fish jellyfish here but make sure no individual species can take over if things start to tip out of balance the sea turtle helps to get things back into equilibrium hedley mission. in the capital soon is visit another laborious tree this one focuses on developing aquatic bio pro dots the researchers here study marine organisms to identify natural substances that could be used in cosmetics and other applications they found that the meat of the blue crab is rich in various proteins by turning the crab meats into a powder they've developed

a protein rich food supplement so now the blue crab has an appeal for the domestic market to the blue crab allport destroy the livelihoods of many fishermen but now it's become a source of income allowing the fishing industry to survive and by catching the news in the crabs this invasive species is being kept on the control of tunisia's coast. one problem and no mirror even on look to see here you. believe i need a name completely changing lately. how will climate change just stick to us and our children. born

w dot com slash water. anyone who's ever been to south africa will of the otis they thousands of kilometers a friend say that cuts across the land usually decide to keep the lifestyle in place now faces also have destructive consequences for the local environments in addition to being debt the truck for what life here also prevent animals from roaming freely which leads to over gratian land degradation and by the diversity loss now some heard this i'm now reversing the strain. and b.s. heading on the ecological revolution. when livestock wanted a great place of the kind of rooting central south africa the unemotional going to allow to linger. 2 percent of education from the reason they have to be kept on the move so they can only eat the plants headship it takes in the house yes experience and i've seen hard landscape changed since he's been grazing his i mean most here.

it is. it's. pitch is in the past growth was not that much but now since we have got it and you see prices what. 2 we buy in that nor is it good no change or increasing. quote actually. the headers are part of the supply biodiversity project and supports commissioned livestock keeping while boost in london to ration on this 24000 hectare from. the car or so much green on home to millions of until up and buffalo loose in the topsoil and yet droppings fertilized it. in a bid to recreate degrade migrations of the past the project employs shepherds to need lives talk to players. is appointed to lead out he's confident that harris can help. him with this referendum. which we fundamentally believe that

this method or farming give space for wildlife to co-exist with production actually poultry so that's really vision is to find a way can isn't by which we can. foster biodiversity on production farms. the thousands of kilometers of fences needed for intensive livestock i would culture are one of the main reasons why wildlife has disappeared fences prevented yani most from roaming free as they search for grazing land and water they often end up tangled in. you know how to study the effects of defenseless famine method and environment ecologist are monitoring the project over the past 2 years researchers. and a group of students have recorded the number of plant species in selected study

sites. the group evaluates the earth index the index is the term in by the amount of green seen on the ground by satellites and allows researchers to compare plant growth in different regions over time. and you can already start picking up changes in trains within way the herd has been grazing especially over a longer recent period in parts of the farm and the green index shows up quite pronounced and we compared it to traditional farms where it isn't quite as pronounced and they seem to be quite a significant color it's just looking at the pixels are learning you know and taking the green out of pixelization but from that learn you can really start seeing a difference there are many positive signs areas that have been grazed by the have seen. slowly wild animals are returning to the farm more than 500 until counted and even a leopard was recently cited. as

however this yes london season turned out to be very successful. 800 sheep to the herd slowly but surely the project this turned into a profitable venture. by destroying the plants and animals in our ecosystems we are destroying the basis of our innate systems hopefully you found eco special us insightful excited time for me to sing goodbye from the show decks garden in lake us i'm priscilla ams thanks for watching and see you next time . bikeways on that all you all of us remember to try and do a bit of course of action you might even want to join one of the many initiatives helping to god what environment do you join us next on if you can i am some got to know just saying goodbye from campolo here in uganda.

it's about. how one. gets the foundation of a hoarder. the new silk road. china wants to expand its influence with this trade network and so in europe conflicts are inevitable the consequences unpredictable the guinness book of the shaking the chinese state has a lot of money at its disposal to get close enough and that's how it's expanding

and asserting its status and position in the world basically obama was making china is promising its partners rich profits but in europe there's a sharp warning you are ever accept money from the new superpower will become dependent on any. china's gateway to europe. starts feb 19th on w. d c margaret 5 keys to safer food. clean to prevent contamination looks. great draw and cook foods to avoid cross contamination. cooks thoroughly to kill microorganisms.

keep food safe temperatures of the cold cold to prevent bacterial broke up. use safe water and safe raw materials to avoid content. producers are the ones primarily responsible for the safety of the food. but you can protect yourself and your family from diseases and not only by plying the 5 keys to see for food use them but you also have a role to play. the 1st.

place. the blame. the but. oh. this is g.w. news live from berlin and more than a 1000 people are arrested in russia after the jailing of kremlin critic alexina valving riot police turn out in force in moscow to prevent people from demonstrating against the court ruling activists say that they are targeting peaceful protesters not only accuses president putin of trying to.