Nearly 800 million people lack access to clean water, but how do you fix that? Wired writer Davey Alba reveals Bill Gates’ solution: a machine that turns poop into pure H2O.Jan. 22, 2015
UP NEXT
Fossil fuel industry takes gaslighting to new level with dark money campaign
04:12
California farm town becomes beacon of electric car use with free ride program
03:56
White House Climate Adviser: ‘Sen. Manchin is not the enemy’
06:46
'Hugely significant first step,' says energy secretary of infrastructure bill passing key vote
06:12
Hayes: Extreme weather is ‘new normal’ thanks to decades of climate inaction
06:06
Hayes: Infrastructure plan without climate spending is ‘utter madness’
