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![](/sites/default/files/styles/thumbnail/public/images/energy-renewable-hydroelectric-srisailam-dam-india.jpg?itok=9esGQZMD)
How Hydroelectric Energy Works
Learn how moving water is converted into electricity in this comprehensive overview, including a discussion of the hydropower resource, its environmental and societal impacts, and the potential for future expansion of hydroelectic energy.
Explainer
![Nuclear launch control console.](/sites/default/files/styles/thumbnail/public/2022-07/1500-900-nuclear-launch-panel.jpg?itok=tQzIQ1cA)
What is Hair-Trigger Alert?
Hundreds of US nuclear warheads are kept ready to launch within minutes—making us less safe, not safer.
Explainer
![A tractor in a field.](/sites/default/files/styles/thumbnail/public/images/vehicles-fuels-miscanthus-biofuels-harvest.jpg?itok=DQ_UkZRk)
Better Biofuels
When developed from the right sources, biofuels offer huge potential as a clean-burning alternative to oil.
Explainer
![A coal plant](/sites/default/files/styles/thumbnail/public/images/energy-coal-john-sevier-plant.jpg?itok=ZygSkP59)
Water for Coal
Coal-fired power plants, which produce a significant share of US electricity, have significant impacts on water quantity and quality.
Explainer
![](/sites/default/files/styles/thumbnail/public/images/2017/10/csd-playbook-images-mann.jpg?itok=E7JFc0n6)
Legal Harassment of Climate Scientist Michael Mann
A summary of Virginia Attorney General Ken Cuccinelli's misguided investigation of respected climate scientist Michael Mann.
Explainer
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Food Systems 101
How does local food move from the fields to the table?
Explainer
![Nuclear space satellite.](/sites/default/files/styles/thumbnail/public/images/nuclear-space-tdrs-satellite-1.jpg?itok=SqOKtgXs)
Space Security
Smart planning and thoughtful safeguarding—not weaponization—will protect US interests in space.
Explainer
![Cars in a haze on a highway.](/sites/default/files/styles/thumbnail/public/images/vehicles-air-pollution.jpg?itok=R10br3wq)
Vehicles, Air Pollution & Human Health
Cars and trucks are one of the leading causes of air pollution—but cleaner vehicles can help.
Explainer
![Cars in traffic sitting in a cloud of exhaust smoke.](/sites/default/files/styles/thumbnail/public/images/vehicles-air-cars-traffic-pollution-1_0.jpg?itok=hX6kN0ok)
Car Emissions & Global Warming
Transportation is one of the largest sources of US global warming emissions—but cleaner vehicles can help.
Explainer
![](/sites/default/files/styles/thumbnail/public/images/tfci-forest-bare-hillside-1_2.jpg?itok=oHUU30tk)
Global Warming Solutions: Stop Deforestation
Tropical deforestation accounts for about 10 percent of the world’s global warming emissions.
Explainer
![](/sites/default/files/styles/thumbnail/public/images/tfci-forests-field-logs-river.jpg?itok=ikh-w0YO)
Ten Reasons to Reduce Tropical Deforestation
Tropical deforestation accounts for about 10 percent of the world's global warming pollution. Here are ten reasons why protecting tropical forests is in the United States' best interest.
Explainer
![](/sites/default/files/styles/thumbnail/public/images/energy-renewable-solar-panels-sunset-reservoir-san-francisco-california.jpg?itok=73pJBQzT)
Map of California Renewable Energy Projects
Locations and information for California renewable energy projects, including wind, solar, biomass, and geothermal energy.