Animals may be able to sense an earthquake coming as long as three weeks before it happens, well before humans can, a new international study found.
By examining footage from motion-sensor cameras in Peru’s Yanachaga National Park, scientists found that animal activity declined significantly in the month before a major 7.0 magnitude earthquake struck, according to a study published in Physics and Chemistry of the Earth. During the three weeks before the earthquake, the cameras recorded about a third as many animal sightings as usual, and in the five to seven days before the quake, the cameras recorded no animals at all. The researchers think that animals may be more sensitive to positive ions in the air that build up when rocks in the earth’s surface are stressed leading up to an earthquake, which may cause them to flee.
This is not the first time researchers have noted this phenomenon—scientists in China and Japan have been studying it for a while, noting that lab rats have a harder time sleeping ahead of an earthquake.
- How to Help Victims of the Texas School Shooting
- TIME's 100 Most Influential People of 2022
- What the Buffalo Tragedy Has to Do With the Effort to Overturn Roe
- Column: The U.S. Failed Miserably on COVID-19. Canada Shows It Didn't Have to Be That Way
- N.Y. Will Soon Require Businesses to Post Salaries in Job Listings. Here's What Happened When Colorado Did It
- The 46 Most Anticipated Movies of Summer 2022
- ‘We Are in a Moment of Reckoning.’ Amanda Nguyen on Taking the Fight for Sexual Violence Survivors to the U.N.