Early in Earth’s history, space rocks frequently hit the young planet. It is estimated that “giant impactors,” greater than 6.2 miles (10 kilometers) across, pummeled the planet at least ...

L ast month the University of Pennsylvania sanctioned Amy Wax after a faculty-hearing board concluded that the tenured law professor had engaged in “flagrant unprofessional conduct” and had ...

It's a low-energy environment without strong currents. Then all of a sudden, you have a giant tsunami, sweeping by and ripping up the sea floor," said Drabon. The S2 meteorite, estimated to have ...