David Weinstein uses a machine he built with a scientist from Stanford and programer from MIT to check a selection of diamonds for grown versus mined diamonds at the International Gemological Institute offices in Manhattan. Michael Rubenstein for NPR hide caption toggle caption Michael Rubenstein for NPR Around the corner from the famous Diamond District

The U.S. Amundsen-Scott South Pole Station in Antarctica as seen in 2002. David McCarthy/AFP/Getty Images hide caption toggle caption David McCarthy/AFP/Getty Images The U.S. Amundsen-Scott South Pole Station in Antarctica as seen in 2002. David McCarthy/AFP/Getty Images Buzz Aldrin, who walked on the surface of the moon with Neil Armstrong in 1969, is being medically

In a cluster of glowing human stem cells, one cell divides. The cell membrane is shown in purple, while DNA in the dividing nucleus is blue. The white fibers linking the nucleus are spindles, which aid in cell division. Allen Institute for Cell Science hide caption toggle caption Allen Institute for Cell Science In a

Displaced Iraqi kids who fled Mosul with their parents sit outside their tent at a camp for internally displaced people in Hassan Sham, east of Mosul, on Nov. 12. Many kids stopped attending school due to the ISIS takeover and their parents are eager to see them back in the classroom. Hussein Malla/AP hide caption

Donald Trump speaks at his National Doral golf club in Florida. He repeatedly showcased his properties and hotels throughout the presidential campaign. Evan Vucci/AP hide caption toggle caption Evan Vucci/AP Donald Trump speaks at his National Doral golf club in Florida. He repeatedly showcased his properties and hotels throughout the presidential campaign. Evan Vucci/AP In

Oliver Potts, the director of the Office of the Federal Register, oversees the Electoral College. Brian Naylor/NPR hide caption toggle caption Brian Naylor/NPR Oliver Potts, the director of the Office of the Federal Register, oversees the Electoral College. Brian Naylor/NPR So here’s a riddle: What college doesn’t have a campus, or professors, or students or

One more coffee, one more cigarette. One more morning, trying to forget. Bob Thomas/Getty Images hide caption toggle caption Bob Thomas/Getty Images One more coffee, one more cigarette. One more morning, trying to forget. Bob Thomas/Getty Images Older people who smoke may think there’s no reason to give up the habit. After all, hasn’t the

Juana Rivera, left, speaks with agent Fabrizzio Russi about buying insurance through the Affordable Care Act in Miami on Dec. 15, 2014. Joe Raedle/Getty Images hide caption toggle caption Joe Raedle/Getty Images Juana Rivera, left, speaks with agent Fabrizzio Russi about buying insurance through the Affordable Care Act in Miami on Dec. 15, 2014. Joe

An aerial view of the Lewisburg prison complex. Google Earth hide caption toggle caption Google Earth An aerial view of the Lewisburg prison complex. Google Earth In a letter to U.S. Attorney General Loretta Lynch, 37 civil rights, human rights and church groups on Monday asked the U.S. Department of Justice to investigate “harrowing allegations

A sculpture stands at an encampment where protesters of the Dakota Access oil pipeline have been gathered for months near Cannon Ball, N.D., on Saturday. James MacPherson/AP hide caption toggle caption James MacPherson/AP A sculpture stands at an encampment where protesters of the Dakota Access oil pipeline have been gathered for months near Cannon Ball,

Rep. Tom Price (center) appeared in early 2016 before the House Rules Committee, when he sponsored legislation that would repeal President Obama’s signature health care law. J. Scott Applewhite/AP hide caption toggle caption J. Scott Applewhite/AP Rep. Tom Price (center) appeared in early 2016 before the House Rules Committee, when he sponsored legislation that would

Picture this: You’re at a park, on a walk, with a baby. A friendly middle-aged man approaches you and tells you your stroller could be really dangerous. You might think, this man is crazy. But maybe not if you knew he’s the nation’s product safety chief. Elliot Kaye expects to step down as chairman of