Oil tycoon T. Boone Pickens dies at 91.
RELATED: John Bolton out of White House https://www.youtube.com/watch?v=rvZ2d2Q46pk
T. Boone Pickens joined other billionaires in signing a “giving pledge” in promising to donate a majority of his wealth to charity.
» Subscribe to USA TODAY: http://bit.ly/1xa3XAh
» Watch more on this and other topics from USA TODAY: https://bit.ly/2JLUY9K
» USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR.