Mark Zuckerberg, Yuri Milner

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Photo - <p>Facebook CEO Mark Zuckerberg, left, speaks next to Yuri Milner at an announcement for the Breakthrough Prize in Life Sciences at Genentech Hall on UCSF’s Mission Bay campus in San Francisco, Wednesday, Feb. 20, 2013. (AP Photo/Jeff Chiu)</p>

Facebook CEO Mark Zuckerberg, left, speaks next to Yuri Milner at an announcement for the Breakthrough Prize in Life Sciences at Genentech Hall on UCSF’s Mission Bay campus in San Francisco, Wednesday, Feb. 20, 2013. (AP Photo/Jeff Chiu)

News,Science and Technology

Facebook CEO Mark Zuckerberg, left, speaks next to Yuri Milner at an announcement for the Breakthrough Prize in Life Sciences at Genentech Hall on UCSF’s Mission Bay campus in San Francisco, Wednesday, Feb. 20, 2013. (AP Photo/Jeff Chiu)

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