Mars is an inhospitable desert planet. Billions of years ago, things were different. In Jezero Crater, for example, fed by a ...

Stronger links between researchers who work on Earth’s and other planets’ atmospheres, and between the experimental, ...

New clues from the day the dinosaurs died. A mysterious ancient human tooth. Primordial galaxies. See how the past year expanded our knowledge of the cosmos and our own backyard. Yale researchers ...