Earth and Environmental Science

Celebrating Earth Week at Penn

Organized by Penn Sustainability, Earth Week runs April 17-23 and will include dozens of events centered on the themes of environmental justice, climate, and nature-based solutions.

Katherine Unger Baillie

Climate scientist Michael Mann makes a home at Penn

Known for his “hockey stick” graph that hammered home the dramatic rise of the warming climate, the climate scientist is now making his mark on Penn’s campus, both through his science and his work on communicating the urgent need for action on the climate crisis.

Katherine Unger Baillie

Update of a local tree field guide offers ‘antidote for plant blindness’

A new edition of “Philadelphia Trees,” coauthored by former Morris Arboretum director Paul W. Meyer, Catriona Bull Briger, and Edward Sibley Barnard offers tips for identifying tree species and highlights some of the most notable trees in the region, including many on Penn’s campus.

Katherine Unger Baillie

From glacier ice, a wealth of scientific data

Biogeochemist Jon Hawkings of the School of Arts & Sciences and his lab study glaciers to understand the cycling of elements through Earth’s waters, soils, and air in its coldest regions, with implications for climate change, ecosystem health, and more.

Katherine Unger Baillie

Turning carbon emissions into rocks

In Penn’s Clean Energy Conversions Lab, researcher Peter Psarras and colleagues are repurposing waste from industrial mines, storing carbon pulled from the atmosphere into newly formed rock.

Michele W. Berger

What secrets might 2-million-year-old DNA hold?

Scientists from Denmark recently extracted and sequenced the oldest-ever DNA, from permafrost in Greenland, revealing a robust ecosystem of 135 species. Penn Today spoke with four faculty members about the potential power of ancient DNA.

Katherine Unger Baillie



In the News


Associated Press

Here’s why experts don’t think cloud seeding played a role in Dubai’s downpour

Michael Mann of the School of Arts & Sciences says that many people blaming cloud seeding for Dubai storms are climate change deniers trying to divert attention from what’s really happening.

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Salon.com

“Record-shattering” heat wave in Antarctica — yep, climate change is the culprit

Michael Mann of the School of Arts & Sciences says that persistent summer weather extremes like heat waves are becoming more common as people continue to warm the planet with carbon pollution.

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Sydney Morning Herald (Australia)

Scientists struggle to explain ‘really weird’ spike in world temperatures

Michael Mann of the School of Arts & Sciences says that tendencies to exaggerate climate science in favor of “doomist” narratives helps no one except the fossil fuel industry.

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Vox.com

Spring is here very early. That’s not good

Michael Mann of the School of Arts & Sciences says that plant-flowering, tree-leafing, and egg-hatching are all markers associated with spring that are happening sooner.

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The New York Times

We don’t have time for climate misinformation

In a co-written Op-Ed, Michael Mann of the School of Arts & Sciences says that meaningful decarbonization in the U.S. is in jeopardy of being blocked or slowed if a significant portion of the electorate does not accept the basic scientific facts and implications of climate change.

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NPR

A famous climate scientist is in court, with big stakes for attacks on science

Michael Mann of the School of Arts & Sciences is suing a right-wing author and a policy analyst for defamation against the “hockey stick” climate change graph.

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