#OTD Dr. Shirley Ann Jackson became the 1st African-American & the 1st woman to serve as Chairman of the @NRCgovpic.twitter.com/DXGdbbY5qD
11:00 AM - 2 May 2015
0 replies
2 retweets
2 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.