Earth and Environmental Science

Amid Earth’s heat records, scientists report another bump upward in annual carbon emissions

Michael Mann of the School of Arts & Sciences says that total carbon emissions including fossil fuel pollution and land use changes such as deforestation are basically flat because land emissions are declining.

Climate scientists fear Trump will destroy progress in his second term – and the outcome could be ‘grim’

Michael Mann of the School of Arts & Sciences says that a second Trump term and the implementation of Project 2025 represents the end of climate action in this decade.

Special mud rubbed on all MLB baseballs has unique, ‘magical’ properties, study finds

A study by Douglas Jerolmack of the School of Arts & Sciences and School of Engineering and Applied Science and colleagues has uncovered the mechanical properties of the mud used to coat Major League baseballs.

The science that makes baseball mud ‘magical’

Corporations using ‘ineffectual’ carbon offsets are slowing path to ‘real zero’, more than 60 climate scientists say

Michael Mann of the School of Arts & Sciences signed a pledge asserting that corporate carbon offsets are ineffectual and hinder the energy transition.

Climate change despair has never been higher — but experts say hope is still possible

Michael Mann of the School of Arts & Sciences says that the obstacles to avert critical planet warming are entirely political, rather than physical or technological.

Crumbling America: The infrastructure crossroads

Howard Neukrug of the School of Arts & Sciences discusses where America’s water infrastructure needs to be shored up and what improvements can be made to aging pipes and unreliable delivery mechanisms.

Penn solutions to climate change

As society grapples with the impacts of a worsening climate—from the increased frequency and intensity of extreme weather events to rising sea levels and deadly heat waves—the need for actionable solutions has never been greater, Penn researchers say.

Hurricane threat poised to keep rising, experts warn

Michael Mann of the School of Arts & Sciences says that every Celsius degree of warming increases maximum winds in the strongest storm by about 12%, equating to a 40% increase in wind damage.

Climate expert on Hurricane Milton’s rapid intensification as ‘extreme weather becomes more extreme’

Michael Mann of the School of Arts & Sciences says that Hurricane Milton's rapid intensification is part of a trend fueled by climate change.

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