All explainers
Explainer
What is Solar Geoengineering?
Solar geoengineering technologies cool the earth by reflecting sunlight back into space—but they pose many risks, challenges, and uncertainties.
Explainer
Vote-By-Mail and the 2020 Election
More voters than ever before will cast their ballots by mail this year. How do we know it's reliable, and how it will make this year's election different?
Explainer
Comparing Electric Vehicles
We explain and compare hybrids, plug-in hybrids, battery electrics, and fuel cell electric vehicles.
Explainer
No First Use Explained
What's a No First Use (NFU) Nuclear Policy and would adopting one make the United States safer?
Explainer
Climate Change and Wildfires
Wildfire activity in the US is changing dangerously, as conditions become hotter and drier due to climate change.
Explainer
Voting Rights and Environmental Justice
Disenfranchisement through voter suppression and gerrymandering prevents overburdened communities from fighting back against threats to their well-being.
Explainer
What is ZEV?
The Zero Emission Vehicle (ZEV) program is a California state regulation that requires automakers to sell electric cars and trucks in California.
Explainer
The Endangered Endangered Species Act
Our planet's rich variety of plant and animal life provides many important products and services—from foods and medicines to clean water and pest control—as well as a multitude of less tangible benefits.
Explainer
Sustainable Agriculture Practices
Here are four key methods 21st-century farmers are adopting to take better care of the land that they—and we—depend on.
Explainer
Coal Power Impacts
Formed deep underground over thousands of years of heat and pressure, coal is a carbon-rich black rock that releases energy when burned.
Explainer
Hurricanes and Climate Change
Increasingly destructive hurricanes are putting a growing number of people and communities at risk.
Explainer
Holding Major Fossil Fuel Companies Accountable
Major fossil fuel companies have known for decades that their products—oil, natural gas, and coal—cause global warming.