The case focuses on the Clean Air Act permitting required of companies that want to build or modify facilities expected to emit a lot of gases. Critics call the requirement costly and time-consuming.
Zircon crystals found in sandstone on an Australian sheep ranch are so tiny that you'd need a magnifying glass to see them. But recent measurements confirm they offer our earliest glimpse of Earth.
As more states legalize pot for medical and recreational use, law enforcement and health officials want to deter driving under the influence. But the task isn't as clear cut as it is with alcohol.
Two men broke a record for traveling from the coast of Antarctica to the South Pole and back, on foot. They retraced the steps of a British Royal Navy officer, whose team died on the journey in 1912.
Reform advocates hope the deal to limit solitary confinement becomes a model for prisons throughout the country.
One of the world's most powerful drug lords has been captured. Mexican authorities say Joaquin "El Chapo" Guzman was taken into custody after a months-long investigation.
Zimbabwe's president, Robert Mugabe, is 90 years old. In power since 1980, Mugabe is considered a despot in the West. NPR's Rachel Martin discusses his legacy with reporter Ofeibea Quist-Arcton.
The UN Security Council unanimously adopted a resolution Saturday to boost humanitarian aid access in Syria. More than 9 million people need help, according to the U.N.
With Kiev now almost empty of its political leaders, NPR's Rachel Martin speaks with Geoffrey Pyatt, the U.S. ambassador to the Ukraine.
Ukraine's Parliament pushed President Viktor Yanukovich out of office as his political nemesis was released from prison. Reporter Soraya Sarhadi Nelson gives NPR's Rachel Martin the latest.