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Large tornado outbreaks are becoming more common in the U.S.

Scientists are still teasing out the connections between climate change and tornadoes in the U.S. Large outbreaks of tornadoes are getting more common, but the total number of tornadoes isn't growing.

Copyright 2025 NPR

Rebecca Hersher (she/her) is a reporter on NPR's Science Desk, where she reports on outbreaks, natural disasters, and environmental and health research. Since coming to NPR in 2011, she has covered the Ebola outbreak in West Africa, embedded with the Afghan army after the American combat mission ended, and reported on floods and hurricanes in the U.S. She's also reported on research about puppies. Before her work on the Science Desk, she was a producer for NPR's Weekend All Things Considered in Los Angeles.
Steve Inskeep is a host of NPR's Morning Edition, as well as NPR's morning news podcast Up First.

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