Explainers

The Earth is quickly becoming hotter. How do we know?

School lunch programs are helping kids eat healthier. Let's make these programs stronger.

Biodiesel is a growing part of our fuel supply, but its potential as a solution depends on what it’s made from.

What if North Korea or Iran launched a nuclear missile aimed at the United States? Could we prevent it from arriving?

Our world is full of chemicals, and some of them are hazardous to our health or to the environment. We need smart, effective policies to help us minimize these risks--and that means policymakers need to listen to scientists, not industry lobbyists.

To make smart decisions about added sugar and their health, Americans need to know what the science says.

In general, people of color have received fewer of the benefits from scientific advances and borne more of the destructive consequences

FAQ - does air pollution--specifically particulate matter (aerosols)--affect global warming?

Tight oil is an emissions-intensive source of unconventional oil—and production is ramping up.

Simple tips to reduce the environmental impact of your car or truck.

The waste generated by nuclear power remains dangerous for many years--so we must make wise decisions about how to handle and dispose of it.

Major fossil fuel companies and special interest groups have worked for years to block efforts to reduce carbon pollution. They continue to do so today.