text:  Michael Copley joins us from NPR's Climate Desk to discuss. Barrow was Category 4 storm on Sunday, then it got to a 5 late yesterday. I mean, it's the earliest in the year, Michael. We've had a hurricane reach that size in the Atlantic. What's going on? It's early in the season. This is a big storm, and it got big fast. And that's exactly the kind of thing climate scientists have been expecting. We're seeing record high ocean temperatures, which fuel hurricanes, and those record temperatures are being driven by climate change. Burning fossil fuels releases gases like carbon dioxide.