Researchers rebuilt long-extinct versions of a crucial enzyme that helps make nitrogen available to life, offering an unprecedented glimpse into Earth’s distant past. The breakthrough could aid the ...

Why do beaches today have seashells from clams and snails instead of brachiopods? A new study suggests the answer lies in Earth's greatest mass extinction, when warming oceans and falling oxygen ...

The Earth–ionosphere system forms a natural electromagnetic cavity, within which extremely low frequency (ELF) waves generated primarily by global lightning discharges become trapped and resonate.

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 ...