NPR's Howard Berkes reports on controversy of federal land swaps in the state of Utah. Critics of the deals that exchanged state land for federal land appear to have the federal government cheating itself.
Forty years after the Challenger disaster, NPR explores the engineers' last-minute efforts to stop the launch, their decades of guilt and the vital lessons that remain critical for NASA today.
Addressing a problem first identified 50 years ago, federal regulators say stricter new rules to limit miners' exposure to silica dust are expected to finally go on the books on Tuesday.
For decades, miners have called for limits on highly toxic silica dust, which they're exposed to while mining. An investigation shows its impact and the weakness of proposed rules to protect them.