Thomas "Tom" Steyer, founder and former chief executive officer of Farallon Capital Management LLC, stands for a photograph in San Francisco, California, U.S., on Wednesday, Oct. 8, 2014. As rising seas threaten Florida, billionaire Thomas Steyer is floating an $8.6 million campaign to save the state, opening 21 offices, deploying more than 500 staffers and volunteers and sending out a rolling ark. Photographer: David Paul Morris/Bloomberg via Getty Images
