One of the most troubling ideas about climate change just found new evidence in its favor

Noted: One researcher who co-wrote an influential 2012 study suggesting that changes in the Arctic could be driving mid-latitude weather extremes, Stephen Vavrus of the University of Wisconsin, praised the new research in an emailed comment Monday. “This study goes beyond statistical correlations and explores a specific process that can plausibly explain how enhanced high-latitude warming trends may trigger remote weather impacts,” he said.