The positive impact of a giant meteorite that crashed into Earth more than 3 billion years ago

More than 2 billion years before the dinosaur-destroying meteorite, a meteorite the size of four Mt. Everests, known as S-2, crashed into Earth, creating a planetwide tsunami that actually had a positive impact on future life. Carolyn Beeler speaks with Nadja Drabon, a professor in the Department of Earth and Planetary Sciences at Harvard University and the lead author of a new study about the S-2 meteorite in the journal, "The Proceedings of the National Academy of Sciences."