When a meteorite with the mass of four Mount Everests hit Earth 3.2 billion years ago, it caused global chaos and provided an ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

Microorganisms—bacteria, viruses and other tiny life forms—may drive biological variation in visible life as much, if not ...

Evolution is the way groups of life-forms change over time to better fit the places they live. It is why life takes "such endless forms most beautiful and wonderful," as British biologist Charles ...

Single-celled organisms called archaea can become multicellular when compressed, highlighting the role of physical forces in ...

One of the most important scientific questions today is how many potential Earth-like Habitats (EHs) exist in the Galaxy, and ...