Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been ...

Organelles in cells were originally often independent cells, which were incorporated by host cells and lost their independence in the course of evolution.

Organelles in cells were originally often independent cells, which were incorporated by host cells and lost their independence in the course of evolution. Biologists are now examining the way in which ...

Studies have suggested that genes under strong sexual selection tend to evolve rapidly, particularly those associated with ...

Increased antibiotic use can lead, seemingly paradoxically, to more problematic infections, as the bacteria evolve to resist ...

A new book offers a fascinating journey from insects to apes and a forceful rebuttal to bigotry showing what the incredible ...

A new study examines cancer prevalence across hundreds of vertebrate species. Every multicellular creature, whether soaring ...

Penn State researchers propose that Earth and life have evolved together in a way that is more typical of life-supporting ...

The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a ...

Human embryos briefly exhibit traits like tails and gill-like structures, revealing our evolutionary history and deep ...

T his spring the University of Tennessee at Knoxville marks the centennial of the Scopes “monkey trial,” the showdown over the teaching of Darwinian evolution held in Dayton in the summer of 1925.