(September 2013) 65 million years ago, the Earth was ravaged by tsunamis, a huge dust cloud darkened the skies and acid rain fell on plants and animals. These events marked the latest mass extinction and the creeping end for more than 50 percent of all species on Earth. Not even the dinosaurs would survive this apocalypse. These events were most likely caused by an asteroid approximately 10 kilometers across that impacted the Earth in the area of today’s Gulf of Mexico, scarring the planet’s surface with a crater over 170 kilometers wide.
http://www.stone-ideas.com/2013/09/09/deflecting-asteroids-from-their-way-to-earth/
