A molecule that’s known for its smelly and poisonous nature on Earth may be a sure-fire sign of extraterrestrial life.

Scientists reveal the genes and proteins controlling the chemical structure of a paleoclimate biomarker.

The Summons Lab compares lipids from Antarctic microbial communities to century-old samples.

Study finds even the tallest ice cliffs should support their own weight rather than collapsing catastrophically.

Improved air quality in China could prevent nearly 2,000 premature deaths in the U.S.

Study shows minerals sequester carbon for thousands of years, which may explain oxygen’s abundance in the atmosphere.

Results may help researchers interpret ancient monsoon variations, predict future activity in the face of climate change.

Phytoplankton decline coincides with warming temperatures over the last 150 years.

Study finds shallow bodies of water were probably more suitable for Earth’s first life forms.

Major tectonic collisions near the equator have caused three ice ages in the last 540 million years.