Scientists have long been intrigued by the search for water beyond Earth, and NASA's 2012 discovery on Mercury has ...

So if the meteorite has its own source of hydrogen, then early Earth likely did, too—meaning it could have produced water without the help of foreign emissaries. “A fundamental question for ...

Without them, “the majority of researchers might miss the connections.” The big picture, the researchers say, is that the total amount of water in Earth’s soils has been declining since the ...

"Something like 2.7 billion people are without adequate sanitation ... depletion has doubled since 1960." Some of Earth's groundwater is fossil water, created when Earth's climate was far different.