one drop at a time to see a newman al jazeera got cleaned on my board to tom matthews is a senior electra in environmental geography at kings college london joins us from stratford upon even in the u. k. so good guy says be is to try and solve the challenge of also scarcity a. well, that's a really good question. i mean, i think one important place to start is to recognize is that all the natural gas is, have played for long as humans of live, need that and providing a reliable source of all to the communities down stream. while they do this really, especially as a cap to water for the snow in the winter with water is abundant and they stored and then release it during the months when perhaps it doesn't rain. and otherwise, what levels we drop these we visited supplied by gases can remain probably why this plane community is down stream. now when we think about the loss of glass, is that it's a caring, we're cool, is concerned about the lack of that storage and release of water. and this, this concept that we just had described, the artificial grass is we really should call them all to vi