Biologists are confronting a problem they thought they had mostly solved: what, exactly, counts as life. A wave of ...

In a breakthrough for the advanced study of gut health, scientists have developed a 3D microscopic version of the human intestines condensed into a small chip about half the size of a five-cent coin.

Earth’s crust teems with subterranean life that we are only now beginning to understand. Credit...Illustration by Brian Rea. Animation By Delcan & Co. Supported by By Ferris Jabr Ferris Jabr is a ...