Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical ...

One of the defining features of human evolution is the steady expansion of our brains. New findings suggest this growth may be partly linked to higher levels of estrogen before birth. Surprisingly, a ...

A new study provides a clearer timeline for one of the most significant prehistoric sites worldwide for the study of human ...

Researchers have identified a "tipping point" about 2.7 million years ago when global climate conditions switched from being ...

To sort the earliest branches of the dinosaur family tree, paleontologists compare skeletons piece by piece. They build evolutionary trees from hundreds of anatomical traits—hip sockets, vertebrae, ...