Hourly Weather - Firebaugh, United States

An asteroid impact near what's now the Yucatan Peninsula caused giant waves in an inland sea that sloshed into the mouth of a river, leaving a fossilized record of the day the dinosaurs were wiped off the planet. (Illustration courtesy of Robert DePalma via UC Berkley) At a Glance A site in North Dakota nicknamed Tanis has perfectly preserved fossils of fish, animals and plants.The fossil layer formed when a killer asteroid struck off what is now the Yucatan Peninsula.Some...