![Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and](https://c8.alamy.com/comp/CCYGEJ/captain-kirk-douglas-of-the-roots-performs-during-the-40th-earth-day-CCYGEJ.jpg)
Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and
![Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and](https://c8.alamy.com/comp/CCYGEN/captain-kirk-douglas-of-the-roots-performs-during-the-40th-earth-day-CCYGEN.jpg)
Captain" Kirk Douglas of The Roots performs during the 40th Earth Day Anniversary celebration and free concert on the Mall in Washington, DC, April 25, 2010. Speakers included members of Congress, and
![Questlove, Captain Kirk Douglas, Damon Bryson, James Poyser, Gary Clark Jr., Mark Kelley, Ian Hendrickson-Smith, Dave Guy, John Deas, Stro Elliot - Captain Kirk Douglas Photos - Zimbio Questlove, Captain Kirk Douglas, Damon Bryson, James Poyser, Gary Clark Jr., Mark Kelley, Ian Hendrickson-Smith, Dave Guy, John Deas, Stro Elliot - Captain Kirk Douglas Photos - Zimbio](https://www2.pictures.zimbio.com/gi/Six+Degrees+Tennessee+Roots+Jam+Xxz2ZcDYGMzx.jpg)