The Scary Way Global Warming Is Changing Evolution

Nature doesn't like to be rushed. But to keep up with climate change, many animals will need to evolve 10,000 times faster than they have in the past, a new study suggests.

Manmade climate change — fueled by excess greenhouse gases in the atmosphere, namely carbon dioxide — is expected to raise global temperatures by up to 10.8 degrees Fahrenheit (6 Celsius) within the next 100 years. That will transform many ecosystems in just a few generations, forcing wildlife to either evolve quickly or risk extinction.

Published online in the journal Ecology Letters, the study concludes that most land-based vertebrate species evolve too slowly to adjust to the dramatically warmer climate expected by 2100. If they can't make high-speed adaptations or move to a new ecosystem, many terrestrial animal species will cease to exist, the researchers report.