The researchers used camera traps to film chimpanzees in Ivory Coast are just tools.
The film shows that intelligent primates immersed usually do sticks in special water - chewing the end of the stick it into an absorbent brush fresh water to.
Researchers examined 'dipsticks' primates and concluded that they specifically made to have been drinking.
The results are presented in the American Journal of Primatology.
Videos courtesy of Juan Lapuente, Comoe chimpanzees - protection project
Aboriginal groups and river dwellers are built in the struggle against the government and large companies in the major dams to meet the energy needs of Brazil.
The Belo Monte dam is the fourth in the world to produce largest dam capable of 11,000 MW, and more are planned.
A notorious thief eggs is in the race after Brazilian authorities granted it had lost.
Bob Elliot is responsible for the investigation of the RSPB, a charity in the UK, which ensure a healthy environment for birds and other wildlife works. He told the Today - program , which is Zimbabwe Jeffrey Lendrum "our natural heritage to steal from under the nose."
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A look at life in the most polluted city in China. Shijiazhuang is currently under a thick layer of toxic smog.[Not fully retrieve - text content]
Two weeks baby orangutan has its first public appearance at the Brookfield Zoo in Chicago.[Not fully retrieve - text content]
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Rare giraffe born at the zoo in Chester.