Decorah Impact Crater
August 26, 2013 | EarthMagazine.org
Researchers have confirmed a 470-million-year-old impact crater near the town of Decorah, Iowa using multiple types of evidence.
Related: Google Map of Impact Sites
Huge Ancient Landslides in Colorado
April 2, 2013 | Colorado Geological Survey on Facebook
The Colorado Geological Suvey shares aerial images of two ancient landslides that consist of about 635,000,000 cubic feet of mobilized debris and cover an area of about 2.3 square miles.
Martian Meteorites on Earth
March 13, 2014 | National Geographic
Researchers believe that the shergottite meteorites found on Earth may have originated from an impact that created the Mojave Crater on Mars.