Impact Craters May Have Cradled Life On Early Earth

Artist's impression of a major impact event.Fredrik via Wikimedia commonsRights information: ://bit.ly/1jbtszL Asteroid and comet impacts could have created refuges for early life on Earth, protecting the first microorganisms from the sun's harsh rays when the planet still lacked an ozone shield. "Most people associate impacts with the extinction of the dinosaurs, but they can also be beneficial to life," said Gordon Osinski, a geologist at the University of Western Ontario in London, Canada. Os...