All explainers
Explainer
Food Security and Population
One billion people lack adequate access to food. To address this, we need smart changes to the food system—not false solutions.
Explainer
What is Sustainable Agriculture?
There’s a transformation taking place on farms across the United States.
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Tropical Deforestation and Global Warming
Tropical deforestation accounts for less than 10 percent of the world's global warming pollution. Protecting forests helps to fight global warming, protect biodiversity, and promote sustainable development.
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What Is Ethylene Oxide (EtO)?
An explainer page about the health threats posed by Ethylene Oxide (EtO) to workers and communities
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How Energy Storage Works
One of the keys to achieving high levels of renewable energy on the grid is the ability to store electricity and use it at a later time.
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COVID-19 Vaccine FAQ
As COVID-19 vaccines become more widely available, it's important to have access to reliable scientific information. Here are answers to the most common questions.
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Drought and Climate Change
Learn about the different types of drought, the many factors that contribute to their development, and how climate change can have a significant effect on many of them.
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The Clean Power Plan
Analysis and information on the EPA's Clean Power Plan.
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How Boiling Water Reactors Work
A slideshow PDF that explains the structure and function of a typical boiling water nuclear reactor (BWR).
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Does Cold Weather Disprove Climate Change?
It most certainly does not—but it does change the intensity of the heaviest storms.
Explainer
Are Humans the Major Cause of Global Warming?
A straightforward explanation of how we know that humans cause global warming, using charts, graphs, and plain language.
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What is Solar Geoengineering?
Solar geoengineering technologies cool the earth by reflecting sunlight back into space—but they pose many risks, challenges, and uncertainties.