Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

Late last year, a newly discovered asteroid caused quite a stir when initial observations revealed a greater than 1% chance ...

New research suggests “microlightning” exchanges among water droplets in Earth’s early atmosphere may have sparked the ...

Some NASA Earth science missions have been told to prepare termination plans given the potential for major budget cuts in the ...

Yet despite the drumbeat of evidence, we still know of just one planet in the cosmos with life — the one you’re standing on.

The losses in soil moisture already pose issues for farming, irrigation systems and critical water resources for humans. But ...