NPR News

There's growing evidence that a physical injury to the brain can make people susceptible to post-traumatic stress disorder.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

MICHEL MARTIN, HOST:

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

(SOUNDBITE OF BUCKWHEAT ZYDECO SONG, "ZYDECO LA LOUISIANEE")

MICHEL MARTIN, HOST:

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

(SOUNDBITE OF BRUCE SPRINGSTEEN SONG, "BORN IN THE U.S.A.")

MICHEL MARTIN, HOST:

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit NPR.

Copyright 2016 NPR. To see more, visit NPR.

Many Americans are familiar with the astronaut heroes of the 20th century space race — names like Gus Grissom and Neil Armstrong. But who did the calculations that would successfully land these men on the moon?

Several of the NASA researchers who made space flight possible were women. Among them were black women who played critical roles in the aeronautics industry even as Jim Crow was alive and well.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

MICHEL MARTIN, HOST:

Pages