ScienceCanada from space01:34This browser does not support the video element.ScienceJessie Wingard08/17/2017August 17, 2017Millions of years ago, meteorites crashed into Earth forming large craters. Over time, plate tectonics pushed some of those craters to present-day Canada. Now the country is home to some of the oldest and largest impact craters on the planet.Copy linkAdvertisement