Earth’s deep past leaves plenty of unanswered questions. None currently proves an alien visit, but scientists know the ...

Earth's shape can be tested in surprisingly simple ways without relying on space photographs. The strongest part of the evidence is how many independent observations lead to the same answer.

AGU is an international non-profit scientific association with 60,000 members in 137 countries. Since 1962, it annually ...

Scientists have discovered that magma deep inside Earth can store surprising amounts of extra oxygen, potentially revealing a ...

Warming air temperatures are causing glaciers to shrink by about 8% each decade. Human activity is putting serious strain on groundwater supplies around the world, a new study suggests. Forecasters ...

Ancient asteroid impacts may have done more than reshape Earth's surface—they could have helped spark life itself. New computer models show the collisions created enormous underground hydrothermal ...

Most scientists think that Earth and Mars took shape this way from rocky pieces swirling around the young sun around 4.5 ...

Conditions on early Earth may have become stable enough to sustain the chemistry associated with the origins of life around 4.33 billion years ago, according to new research co-led by Planetary ...

At the request of NASA (Science Mission Directorate’s Earth Science Division), the National Academies is initiating “ESAS 2028,” the Decadal Survey for Earth Science and Applications from Space ...