rhesus monkeys

Macaques use stones as hammers to smash open food items like shellfish and nuts.

Science
Health & Safety

Stone flakes made by modern monkeys trigger big questions about early humans

4:40pm March 10, 2023

by Nell Greenfieldboyce

Monkeys using stones to crack open nuts generate many stone flakes accidentally that look exactly like the ones archaeologists have long thought early humans made intentionally as tools. Oops.

Gregoire Courtine, a neurologist at the Swiss Federal Institute of Technology, holds a silicone model of a primate's brain with an electrode array. The goal is to pick up signals from the brain and transmit them to the legs.

World News
National
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Health & Safety

Monkeys Regain Control Of Paralyzed Legs With Help Of An Implant

2:08pm November 09, 2016

by Rae Ellen Bichell

Two monkeys with spinal cord injuries were able to move after a wireless implant restored the connection between brain and legs. But any help for people will be years away, researchers say.

Family means a lot on Cayo Santiago, an island and monkey research colony off the coast of Puerto Rico. The colony of rhesus macaques living on the island since the 1930s has allowed scientists to trace kinship ties and effects across an extended communit

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Science
Health & Safety

Puerto Rico's Monkey Island Lures Scientists For Generations

8:37am July 16, 2015

by Anders Kelto

The isle of Cayo Santiago has been home to at least nine generations of rhesus monkeys since the colony's founding in 1938. Primatologists here seek clues to primate kinship, cognition and ecology.

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