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 ...

Billions of years ago, the molecular building blocks of life emerged from a complex web of chemical and geological processes. This transformation laid the foundation for biological systems, ...

Scientists have spent decades cataloging life on Earth’s surface, from rainforest canopies to ocean trenches. But a growing body of research now shows that a vast, hidden biosphere thrives kilometers ...