Tag: Earth’s geological timeline

Earth is a lot older than we are. Humans have only been around for a small fraction of Earth's history, which dates back about 4.54 billion years. Our planet formed not long after the...

Sixty-six million years ago, a catastrophic asteroid impact changed the course of Earth's history. The impact, which occurred in what is now the Yucatán Peninsula in Mexico, wiped out 75 percent of species on...