When most people think about natural selection, they imagine individuals competing with one another: The fastest animal ...

New research challenges the one-level view of evolution, showing natural selection works on individuals and groups together.

New research suggests that natural selection, famous for rewarding advantageous differences in organisms, can also preserve similarities. The researchers worked with a plant called wild radish and its ...

The common view of natural selection is based solely on the individual: A trait allows an organism to out-compete its rivals and is thus passed down to its offspring. To suggest otherwise can provoke ...