The LUX Dark Matter Detector is installed in the Davis Cavern of the Sanford Lab in South Dakota in March. The water tank measures 24 feet in diameter, is two stories high and will hold 71,600 gallons.
Credit Matt Kapust / AP
Businessman and philanthropist T. Denny Sanford has pledged $70 million to the Sanford Underground Science and Engineering Laboratory. He stands next to a plaque dedicating the 4,850 foot level, where several experiments will be set up, in 2009.
Credit Steve McEnroe / AP
The entrance to the Sanford lab is through the Ross Shaft building of the old Homestake Mine in Lead, S.D.
In Lead, S.D., a steel cage drops almost a mile below ground into the Sanford Underground Laboratory. It's formerly the deepest underground gold mine in North America, and when it closed a decade ago, state officials hoped that an underground science laboratory along with on-site university classes could spur economic development.
American swimmer Nathan Adrian's name hasn't been on everyone's mind, the way that Michael Phelps' or Ryan Lochte's has. But he did something that even Lochte couldn't do this week: beat Yannick Agnel in a head-to-head race.
Adrian's time of 47.52 seconds in the men's 100-meter freestyle gave him his first individual gold medal, as he also beat James Magnussen of Australia, who came in second, and Brent Hayden of Canada.