Climate Change | Penn Today

Conceptual image of a city hit by extreme heatwave

Climate change’s impact on extreme weather events

Michael Mann and collaborators investigated the effects of climate change on the intensity, frequency, and duration of extreme weather events like wildfires, and found that “worst-case” scenario could lead to significant increases in all three.

Will El Niño on top of global heating create the perfect climate storm?

Michael Mann of the School of Arts & Sciences warns against “cherry picking” one set of climate change data from one region over a relatively short period of time.

Climate change keeps making wildfires and smoke worse. Scientists call it the ‘new abnormal’

Michael Mann of the School of Arts & Sciences says that continuing to warm the planet will lead to an ever-moving baseline of worse and worse disasters.

“No end in sight” to wildfire smoke suffocating American cities. And yes, climate change is to blame

Michael E. Mann of the School of Arts & Sciences says that climate change is causing big high-pressure systems with hot sinking air to get stuck in one particular region of the country.

Texas suffers under brutal, early heat wave. Experts say climate change is fueling it

Michael Mann of the School of Arts & Sciences says that the current June heat wave in northern Mexico and the south-central U.S. is unusual, with climate change leading to persistent “stuck” summer jet stream patterns.

Climate change denial hit its stride in the Bush-Cheney era, precipitating today’s climate disaster

Michael Mann of the School of Arts & Sciences explains why the Republican Party’s official stance became the rejection of environmental science during the George W. Bush years.

Nature Restoration Law barely survives as 1.5C threshold breached in hottest June ever

Michael Mann of the School of Arts & Sciences says that 2023 will be the warmest year on record.

Fears of hottest year on record as global temperatures spike

Speaking about El Niño conditions, Michael Mann of the School of Arts & Sciences says, “The global surface temperature anomaly is at or near record levels right now, and 2023 will almost certainly be the warmest year on record.”

Scientists are baffled why the oceans are warming so fast

Michael Mann of the School of Arts & Sciences warns that more record-breaking climate conditions and events are to be expected.

Homeowners inspect the ruined remains of their property after a fire. Rubble, a chimney, and a rusted truck are all that's left.

Q&A

The risky business of homeowners insurance

State Farm, the largest insurer in California, has stopped writing new home insurance policies there, citing “rapidly growing catastrophe exposure.” In a Q&A, Wharton’s Benjamin Keys discusses climate change and its risk to the real estate market.

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