The Rundown USDA survey shows U.S. farms irrigated less land with less total water than five years ago – but used more ...

Brine is generally defined as water with a salt concentration higher than 50 parts per thousand, though some brines can be several times saltier Average salinity of the world’s oceans is roughly 35 ...

As they span significant areas of Asia, Europe and the Americas, karst landscapes cover some 15 percent of the Earth’s land mass. Scientists estimate that these areas of porous bedrock are home to as ...