In this photo released by World Wildlife Fund-National
Geographic, two Thai fishermen show a 293-kilogram (646-pound)
giant catfish they caught from the Mekong River in Chiang Khong
district of Chiang Rai province, northern Thailand Saturday,
June 11, 2005. Thai fishermen have caught this giant catfish
believed to be the world’s heaviest living freshwater fish but
it died and was eaten after environmentalists and officials
negotiated for its release to allow it to spawn. (AP
Photo/Suthep Kritsanavarin, HO) Click Here to See Also: by
Charles C. Mann “Are the mounds, causeways, and canals in
BoliviaÃ¢â¬â¢s Beni region natural formations or the result of
2000 yearsÃ¢â¬â¢ labor by lost societies?” TRINIDAD,
BOLIVIAÃ¢â¬âIn some ways, William Denevan says today, he
didnÃ¢â¬â¢t know what he was getting into when he decided to
write his Ph.D. thesis about the Beni, a remote, nearly
uninhabited, and almost roadless department in the Bolivian
Amazon. Located between the Andes Mountains and the river
GuaporÃÂ© (a major