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A new study has ruled out large, once-molten meteorites called achondrites as sources of Earth’s water.

Researchers used ice core data to reconstruct seasonal temperatures throughout the Holocene. The results link especially hot summers with patterns in Earth’s orbit.

Far from pristine outposts of nature, mountains across the world are being rapidly colonized by non-native plants that spread uphill along roads.

The impact sent surface waves rippling over the Martian surface all the way to NASA’s InSight lander, giving scientists a rare view of the planet’s outer layer.

Radiocarbon dating is a cornerstone of climate and archaeological sciences. But the method is under threat as fossil fuel emissions negate a useful signal from atomic tests.

Tidally locked planets always present the same face to their host stars. What does this mean for their potential to support life?