US West faces reckoning over water but avoids cuts for now

The white rings that wrap around two massive lakes in the U.S. West are a stark reminder of how water levels are dropping and a warning that the 40 million people who rely on the Colorado River face a much drier future.

How Rwanda extracts methane from Lake Kivu for electricity

Lake Kivu lies on the border between the Democratic Republic of the Congo and Rwanda. It's almost the size of Mauritius and has a maximum depth of 480 meters. Lake Kivu also stores huge amounts of methane gas which Rwanda ...

Purifying water with the help of wood, bacteria and the sun

According to the United Nations, about one-fifth of the world's population lives in areas where water is scarce. Therefore, technologies to produce clean water from undrinkable sources, such as seawater, river or lake water, ...

page 35 from 40