Seventy years ago, an atomic bomb wiped a city off the map. The committee that picked the target knew the destruction would be awful, but hoped it could end the war and stop future use of such bombs.
It is hoped that the new supercomputer, expected to go online by 2025, would be the first "exascale" machine — some 20 times faster than today's fastest machine, called Tianhe-2 (Milky Way-2).
Members of Congress have written to the secretary of defense asking him to tell black, Puerto Rican and Japanese-American soldiers that they were unjustly chosen for experiments in WWII.
The military deal reached by the United States and Turkey is an attempt to refocus the fight against ISIS. NPR's Scott Simon talks to former U.S. Ambassador to Turkey Frank Ricciardone.
The Syrian insurgent group affiliated with al-Qaeda has attacked U.S.-backed Syrian fighters. NPR's Rachel Martin gets the details from Anne Barnard of the New York Times.
U.S. officials believe the recent bombing campaign has done little to dislodge the self-declared Islamic State from Iraq and Syria, says an Associated Press report. AP reporter Ken Dilanian explains.
NPR's Melissa Block speaks with United Nations Special Envoy Staffan de Mistura about creating a peace process in Syria. He says there is a new "sense of urgency" by many parties to end the conflict.
Senate Republicans expressed skepticism about the Iran nuclear deal Wednesday, including concern that the deal would allow Iran to acquire missiles and conventional arms in the coming years.