Summary:
- Researchers have discovered evidence that a meteor impact may have triggered a massive landslide in the Grand Canyon around 56,000 years ago.
- The landslide was one of the largest in the Grand Canyon's history, covering an area of about 65 square miles (170 square kilometers).
- The meteor impact likely destabilized the canyon walls, causing the massive landslide to occur, which could have had significant impacts on the local environment and ecosystem at the time.