Researchers at the University of Maine are theorizing that human beings may be in the midst of a major evolutionary shift—driven not by genes, but by culture. "Human evolution seems to be changing ...

Aichryson plants in dry regions, on the other hand, have a stronger CAM photosynthesis, a perennial lifestyle, shrub-like growth, and strong transpiration protection through their cuticle.

Evolution is perhaps the most extraordinary story ever told—a tale spanning billions of years that connects every living thing on Earth through an intricate web of shared ancestry. From the tiniest ...