By investing in renewable energy, we can directly ramp down gas—and decrease its climate, health, and environmental harms.

In the real world, no one is exposed to one pollutant from one source at a time. Cumulative impacts policies seek to address ...

This guide is a resource to help protect us from cumulative impacts of pollution—especially in disproportionately impacted ...

As California transitions to a transportation system powered by clean electricity, it must phase out the existing supply ...

While small amounts of radioactive material are naturally occurring, human activities have increased radioactivity in the ...

Radiation is associated with a wide range of adverse health outcomes, including acute radiation sickness, burns, cancer, ...

The Union of Concerned Scientists collaborates with partners to connect scientific experts, legal scholars, and practitioners through the UCS Science Hub for Climate Litigation. We are building a ...

Roughly 9,500 nuclear weapons are hidden away in bunkers and missile siloes, stored in warehouses, at airfields and naval bases, and carried by dozens of submarines across the world. A single warhead ...

The science is clear: climate change is happening. We are the cause. We need to act now. Table of Contents The science is clear: climate change is happening. We are the cause. We need to act now.

Coal, gas, and other fossil fuels are neither sustainable nor safe. We shouldn’t use them. Coal, oil, and methane gas are fossil fuels formed over time from the remains of living organisms. In the ...

The continued production and use of fossil fuels threatens our climate, public health, and human rights. A fossil fuel phaseout is necessary to build a healthier, safer, and more just world, and any ...