If you travel to one of our great national parks, monuments or historic sites this summer, look for the signs. There’s a reason they call the national park system America’s biggest classroom. There ...

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive ...

Scientists find a link between Barringer Crater and Grand Canyon landslide. Research indicates both events occurred around 56 ...

The paper suggests that a dam created a 50-mile-long, 300-foot-deep paleolake with beavers' tracks in caves above the river, indicating a significant geological event possibly related to Barringer ...