But what would have happened if it hadn't occurred? In 1982, paleontologist Dale Russell asserted that the evolution of ...

The Supreme Court has upheld an order directing Trump officials to “facilitate” the return of the Maryland man mistakenly deported to an El Salvador mega-prison. Leah Litman joins Chris Hayes to break ...

Troodon formosus was a small coelurosaurian dinosaur—a member of the same clade (evolutionary group) to which modern birds belong. Fossilized remains have been discovered of nesting parents and ...