We know the next four years will be a dangerous time for our country and for everyone who cares about a safe, sustainable, and just future.

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.

The energy business is one of the largest industries in the world. Major fossil fuel companies routinely make billion-dollar profits, extracting and distributing oil, gas, and coal. Unfortunately, ...

Paula García is a Senior Bilingual Energy Analyst and Energy Justice Lead in the Climate and Energy Program at the Union of Concerned Scientists. She evaluates energy resource and climate solutions in ...

Nuclear weapons are still here—and they’re still an existential risk. Nine countries possess nuclear weapons: the United States, Russia, France, China, the United Kingdom, Pakistan, India, Israel, and ...

Rachel Cleetus is the policy director with the Climate and Energy program at the Union of Concerned Scientists. She leads the program’s efforts in designing effective and equitable policies to address ...

The movement of wind and water, the heat and light of the sun, the carbohydrates in plants, and the warmth in the Earth—all are energy sources that can supply our needs in a sustainable way. A variety ...

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 ...

Phasing out fossil fuels is crucial for preventing severe climate impacts, saving lives, and avoiding billions in damages. The United States uses a phenomenal amount of oil—with significant costs to ...

Climate change is one of the most devastating problems that humanity has ever faced—and the clock is running out. Table of Contents Climate change is one of the most devastating problems that humanity ...

The fourth chair of the Union of Concerned Scientists’ Board of Directors and the first woman to hold the position, Anne R. Kapuscinski shares a systems approach to problem-solving with UCS staff ...