All explainers
Explainer
Where Radiation Comes From
Human-made sources of radiation have increased since the 1940s in the environments people live in and near.
Explainer
Understanding Radiation
Radioactive materials are elements that spontaneously break apart, or “decay,” into lighter elements over time. Radiation is energy that’s released during that process—and it’s can be dangerous.
Explainer
Diesel Engines & Public Health
With mounting evidence that diesel exhaust poses major health hazards, reducing diesel pollution has become a public priority.
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The Truth about Tyson
For too long, Tyson Foods has gotten away with putting farmers out of business, exploiting workers, poisoning our water and land, and gouging consumers.
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Fissile Materials Basics
A discussion of uranium and plutonium and their role in nuclear weapons.
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All About EV Battery Recycling
Recycling could meet a measurable amount of demand for battery materials as more EVs come on the road.
Explainer
North Korea Basics
Nuclear warheads, long-range missiles, and a combative leader. What are the options?
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What’s Wrong with Fossil Fuel–Based Fertilizer?
Massive overapplication of nitrogen fertilizer in agriculture damages soil, causes pollution, and contributes to climate change.
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What is Climate Loss and Damage?
Wealthy, polluting nations should pay for climate damages.
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The Supplemental Nutrition Assistance Program (SNAP)
Attacks on SNAP are rooted in persistent, divisive myths about the program. Here are the facts.
Explainer
Cars, Trucks, Buses and Air Pollution
Transportation is a major source of air pollution and the emissions that contribute to climate change in the United States.
Explainer
Each Country's Share of CO2 Emissions
Which 20 countries emit the most carbon dioxide? The wealthiest.