Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers.

A newly identified class of RNA molecules has been discovered in bacteria living inside the human body. These circular ...

The human body is an amazing, curious, and disgusting thing. At any given moment, millions of tiny lifeforms are making their way across your body—both inside and out. And now, researchers say they've ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. A new study claims that Prototaxites, which have defied ...

Carly Allen-Fletcher has drawn a picture of the Big Picture, turning her imagination to the six classifications of life forms that scientists call kingdoms: plants, animals, fungi, protists, bacteria ...