at least in theory. >> in engaruka, it's still a dream though.ent less precipitation than in previous years. which is one reason why they are digging the rain basins. according to the campaign, there are now over 200,000 such basins in tanzania and kenya. and all this just because people saw a movie? in reality, people here earn 1 euro 50 per basin. diligent workers like dina hosea can manage five a day. >> we make money digging now. later, when the grass has grown, it will benefit both our cattle and us because we save ourselves the trouble of carrying food to the cattle. if we employ these practices, they will help us take care of our livestock. >> rainwater normally evaporates on the dry soil, but now it can collect in the basins. this gives the water more time to seep into the soil and this allows vegetation to grow not on inside e basins but also all around them. this re-greening program is in full swing and gaining in popularity. strategies like this one have an impact on the global climate and could even help to slow down global warming. a