Super Pollutants: The Hidden Half of Global Warming

June 13, 2025

About half of global warming is driven by pollutants that aren’t carbon dioxide. There are several of these “super pollutants” — so named...

Military Power: Balancing Security and Climate Threats

August 30, 2024

The U.S. military is one of the largest armed forces in the world. Its physical footprint is huge — about 750 bases across 80 countries, plus...

Artificial Intelligence, Real Climate Impacts

April 19, 2024

Artificial intelligence can do some pretty amazing things, including for the climate. But, as with most technology, there are significant trade...

Busted: The Newest Emission Cheaters

February 9, 2024

A settlement for the largest civil penalty resulting from the Clean Air Act has just been reached. The EPA, DOJ and the State of California have...

Revisiting The Enablers: The Firms Behind Fossil Fuel Falsehoods

December 30, 2022

For years, fossil fuel companies have claimed to support climate science and policy. Many have recently pledged to hit net zero emissions by...

What’s in My Air?

December 2, 2022

Key to addressing the climate crisis is having an accurate picture of greenhouse gas emissions. Over a 20-year period, methane is 80 times more...

Cow Poop and Compost: Digesting the Methane Menace

February 25, 2022

Carbon dioxide isn’t only greenhouse gas being emitted into the atmosphere that’s damaging the climate. In a 20-year time frame, methane is...

Hot Cities, Methane Leakers and the Catholic Church

May 21, 2021

In 2017, it got so hot in Phoenix that airplanes literally could not take off, and airlines cancelled dozens of flights. Extreme heat is likely to...

EPA Chief Andrew Wheeler on Cars, Coal, and Climate

March 15, 2019

Greg Dalton sits down for a rare interview with newly-confirmed U.S. EPA Chief Andrew Wheeler on cars, coal, and climate. Mary Nichols, Chair of...

The Hidden Health Hazards of Climate Change

May 10, 2018

Climate change isn’t just an environmental problem – it’s also a health hazard. Air pollution and changing weather patterns give rise to...