Serious injuries from in-flight turbulence are rare, but scientists say they may be becoming more common as climate change alters the jet stream.

Serious turbulence on a Delta Airlines flight headed to Europe sent 25 people to hospitals and forced the plane into an emergency landing in Minneapolis, the airline said. Some aboard the flight from Salt Lake City to Amsterdam weren’t wearing seat belts and were thrown about the cabin, one passenger said.

A Delta flight from Salt Lake City to Amsterdam was forced to make an emergency landing in Minneapolis after severe turbulence injured dozens of passengers, including 25 who were hospitalized.