For more than a century, the Ediacara Biota has quietly confused scientists. These fossils, dating back around 570 million ...

Life on Earth may have developed the ability to form embryos even before it grew the very first animals. A single-celled organism that lives burrowed in the muck beneath shallow seas bears a startling ...

About 800 million years ago (mya), before the supercontinent Pangea formed, the Earth was more diverse than classical theory suggests. By reconstructing the tree of life from the evolutionary history ...

There is ever-growing interest in the ways in which a wide variety of nonhuman animals (animals) deal with the ups and downs of their lived experiences in many different contexts. In his new edited ...