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Landfills are among the nation's largest sources of methane, a greenhouse gas far more potent than carbon dioxide. But accurately measuring methane is a major challenge to reducing it.

After the U.S. Capitol riot, there was a sense that the Jan. 6 cases would be straightforward. But defense attorneys describe prosecutors as overwhelmed by evidence and struggling to build cases.

The Florida senator needs a rebound in the state's GOP primary after a disappointing New Hampshire finish. And he's hoping the backing of the state's young, diverse leadership can help him do that.

The former Pennsylvania senator is getting in the race for president again. Here's a reminder of who he is.

A man who helped flood Washington, D.C., with drugs in the 1980s wants to reduce his sentence using guidelines that help drug offenders secure early release. A federal judge doesn't seem convinced.

Soccer is the national sport. But this was a big weekend for hoops in Johannesburg. Two top local teams faced off and the NBA played its first African exhibition game.

Tim Morrison, a White House official asked to testify Thursday in the impeachment inquiry into President Trump, is expected to leave the National Security Council imminently, three sources told NPR.

This outbreak of COVID-19 adds to the list of animals that can contract the disease. And, in this instance, the minks seem to have passed the virus on to humans.

An investigation from NPR and the PBS show Frontline found oil and gas companies had serious doubts that plastic recycling was viable, but promoted it to keep profits high and plastic bans at bay.

Some Democratic presidential candidates want to ban fracking to help address climate change. That attracts young people, but may alienate swing voters in key oil and gas states like Pennsylvania.