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"When the IPCC says that we've warmed 1 degree C (1.8 degrees F) relative to pre-industrial, that's probably incorrect," said Mann. "It's likely as much as 1.2 degrees C (2.16 degrees F)."

“Winning any national competition six times in a row is extremely hard,” said Jon Nese, senior lecturer in meteorology and associate head of the meteorology and atmospheric science program.

Michael Mann, distinguished professor of atmospheric science and director of the Earth System Science Center, Penn State, will receive the seventh annual Stephen H. Schneider Award for Outstanding Climate Science Communications.

Understanding tornadoes: 5 questions answered

— posted on May 22, 2017 10:56 AM

Penn State meteorology professors Paul Markowski and Yvette Richardson explain why tornadoes form, how to stay safe if you’re near one and whether climate change is affecting tornado patterns.