Rebecca Hersher

The EPA plans to phase out hydrofluorocarbons, or HFCs, which are used in refrigerators and air conditioners. When HFCs are released into the atmosphere, they are extremely good at trapping heat.

Climate and health policies rely on scientific expertise. But the federal science workforce has been shaped by decades of political interference, underfunding and race and gender bias.

The U.S. is planning to rapidly reduce greenhouse gas emissions. This is America's return to the international climate stage. We break it down for you.

The U.S. plans to reduce greenhouse gas emissions dramatically in the next decade. Scientists say it's crucial that the U.S. succeed. Still, many of the positive effects won't arrive for decades.

NOAA is updating its definition of what a "normal" Atlantic hurricane season looks like, based on the last 30 years. The average number of hurricanes in the new normal has risen from 6 to 7.

The computer model that predicts the weather is getting more power. Climate change is upping the stakes for forecasters as extreme weather gets more common and residents demand earlier warnings.

Scientists on five continents are hunting for geological evidence to pinpoint exactly when humans became a major force shaping life on Earth. But settling on the date could unleash a larger debate.

More than 4 million homes face substantial risk of expensive flood damage, a research organization says. Communities where flood insurance is already unaffordable face potentially catastrophic damage.

Israeli authorities are still trying to pinpoint the source of a major oil spill that has polluted much of the country's coastline with chunks of tar.

Texas allows companies to sell electricity at wholesale prices. When the price of electricity skyrocketed last week, that meant exorbitant bills for many residents who had been trying to save money.

The sea level is rising more in some coastal places than in others. But why is that? It has to do with wind, currents, glaciers and even the last Ice Age.

The average global temperatures in 2020 and 2016 were within a few hundredths of a degree. The Earth is about 2 degrees Fahrenheit warmer now than it was in the middle of the 20th century.

People of color experience more air and water pollution than white people and suffer the health impacts. It has long been an underaddressed issue in the federal government.

Overwhelmed sewers. Flooded streets. Deadly heat waves. Baltimore is one of many American cities where the costs of climate change far exceed local resources. Should oil companies pay?

Studies based on private health data are crucial to understanding dangers posed by pollution. A new rule makes it harder for the EPA to consider many studies when setting safeguards.

2020 and 2016 are virtually tied for the hottest year on record. That means more powerful hurricanes, more intense wildfires, less ice and longer heat waves.

Regan is the top environmental regulator for North Carolina. He would be first African American man to run the EPA, and he would oversee much of the federal government's response to climate change.

Mallory, an Obama veteran, would take the helm at a White House office where she worked as former general counsel. The CEQ is seen as critical to address climate change and environmental equity.

Heat waves, air pollution and extreme weather are making people sick and, increasingly, killing people. A key report by global physicians says fossil fuels are to blame.

Space is the best place — maybe the only place — to get a complete picture of how climate change is affecting the Earth's oceans. And what happens in the ocean does not stay in the ocean.