Prof. Taylor Perron speaks with USA Today reporter Kate S. Petersen about the evidence that humans are changing the Earth’s climate. "What's alarmingly different about the global warming happening now is how fast it's happening and how it's clearly associated with humans adding greenhouse gases like carbon dioxide to the atmosphere," says Perron. "Rapid warming in the geologic past, long before there were humans, led to mass extinctions. And times when it was only slightly warmer than now, like before the last ice age, had sea levels high enough to flood most of today's coastal cities."
In the MediaJanuary 30, 2025