Libyans flee on foot along the main road heading west, away from Sirte, on Tuesday. Sirte, cut off from the rest of the country, is the last major town controlled by forces loyal to toppled dictator Moammar Gadhafi.
Mexican journalists march in a protest against violence directed against the media on Sept. 11, in Mexico City. Drug cartels, which have been responsible for many of the deaths, are now intimidating social media sites.
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Justin Mudge walks through the muddy interior of his great uncle's gun shop, destroyed by flooding caused by Irene on Sept. 1 in Prattsville, N.Y. FEMA will run out of money to help disaster victims by early next week unless Congress acts.
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A neutrino detector like this one, seen at Los Alamos National Laboratory in 1995, was used to collect data claiming that neutrinos can travel faster than the speed of light.
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