We have only one example of biology forming in the universe – life on Earth. But what if life can form in other ways? How do you look for alien life when you don’t know what alien life might look like ...

New fossil discovery reveals 535 million-year-old worms, annelids, that were already crawling and swimming, reshaping early ...

Roughly 2.5 million years ago, a nearby star exploded. Around the same time, the diversity of viruses infecting fish in Africa’s Lake Tanganyika rose dramatically. Three researchers from the ...

Over the course of nearly five months in 2022, NASA's Perseverance rover collected rock samples from Mars that could rewrite the history of water on the red planet and even contain evidence for past ...

Around 700 million years ago, Earth was a frozen, white sphere, its rocky surface buried kilometers under ice. Despite the barren landscape, the evolution of complex life in the oceans was about to ...

A 10-minute journey through Earth's human evolution gives you a quick tour of how we, as humans, came to be. It all started millions of years ago with our distant ape-like ancestors who gradually ...

Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were ...