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The Annual Weigh In For Animals At London Zoo

LONDON, ENGLAND - AUGUST 25: Zookeeper Sebastian Grant (R) weighs Dirk, a giant Galapagos tortoise, at ZSL London Zoo as part of their annual weighing and measuring of their animals on August 25, 2011 in London, England. The heights and weights of over 750 different animal species at the zoo are recorded into the International Species Information System, to monitor their health and share the data with other zoos across the world. (Photo by Oli Scarff/Getty Images)

'Extinct' Galapagos tortoise reappears

After 150 years of being "extinct," a species of giant tortoise may be on the verge of a comeback tour, scientists report on Jan. 9. The researchers "found" the lost species, called Chelonoidis elephantopus, by analyzing the genome of a closely related species which lives on Isabela Island, the largest of the Galápagos Islands in the Pacific Ocean.