16 December 2009, 10:13 AM ET
Scientists have captured video of the world's rarest great ape.
14 December 2009, 07:02 AM ET
From crows that craft twigs into usable objects to elephants that morph tree branches into fly swatters, the animal kingdom is full of adept tool makers.
28 November 2009, 04:21 AM ET
An experiment finds that chimps may have a sense of musical rhythm.
11 November 2009, 08:13 AM ET
A gene found in brain cells could explain how we acquired speech.
11 November 2009, 07:54 AM ET
Why did we start using tools? What do other tool users in our family tree say about our early evolution?
11 November 2009, 07:01 AM ET
A rare monkey may have mated with baboons in the past.
04 November 2009, 11:24 AM ET
Chimpanzees offer many clues as to how we evolved our human traits.
16 October 2009, 05:51 AM ET
Primate communication systems shed light on the origins of language and music.
08 October 2009, 08:09 AM ET
The mother-child bond may have roots in other primates.
16 September 2009, 09:15 AM ET
After successful gene therapy, this male squirrel monkey that was once colorblind can now pick out red dots from the grey background. When the monkey correctly noses the red patch, a positive tone sounds and the monkey gets a drop of juice.
16 September 2009, 09:00 AM ET
Gene therapy has given two color-blind monkeys the ability to see red.
15 September 2009, 05:08 PM ET
It doesn't even take a real chimp to pass on the yawning bug.
15 September 2009, 07:44 AM ET
Dolphins and some non-human primates rival humans in cognitive abilities.
10 September 2009, 04:56 AM ET
A study shows that chimps have specific tools for specific tasks.
18 August 2009, 06:03 AM ET
A primate skull and sloth bones are some of the treasures discovered in a prehistoric cave.
13 August 2009, 10:04 AM ET
Capuchin monkeys show affiliation for those who imitate them, similar to humans.
10 August 2009, 11:03 AM ET
Many scientists think early humans walked on their knuckles before evolving the ability to walk upright, but a new study suggests they may have bypassed that step.
04 August 2009, 08:55 AM ET
Monkey's learn more after a success than after a failure, according to a new study.
07 July 2009, 09:35 AM ET
A new monkey subspecies with quite a long tail has been discovered in a remote region of the Amazon in Brazil.
29 June 2009, 06:31 AM ET
Contrary to popular wisdom, two biologists are arguing that orangutans, not chimps, are humans closest relatives.
28 June 2009, 06:21 AM ET
When baby rhesus monkeys want to suckle, they do what human infants do: cry, cry, cry.
12 June 2009, 05:20 AM ET
Humans might be the only primates that truly understand the value of a good trade.
04 June 2009, 08:04 AM ET
Laughter can be traced to back to the last common ancestor of humans and great apes.
28 May 2009, 09:09 AM ET
A third species of the extinct giant lemurs has been discovered in northwest Madagascar, the first addition to the group in more than 100 years.
20 May 2009, 10:13 AM ET
A new primate fossil has made waves among scientists and non-scientists.
20 May 2009, 08:33 AM ET
The mishmash of features in a new primate fossil reminds us that the story of our past might be more complicated than we think.
19 May 2009, 11:44 AM ET
Scientists unveiled a 47-million-year-old fossil with much pomp and circumstance today at the American Museum of Natural History.
18 May 2009, 01:03 PM ET
Scientists have found neurons in monkey's brains that may be responsible for gaze-following behavior
14 May 2009, 10:11 AM ET
Monkeys think about rewards they could have had
08 May 2009, 05:59 AM ET
The instruction from public health officials to keep away from others to stop the spread of the swine flu is a tough one for us primates.
13 April 2009, 01:02 PM ET
Early humans were not as good at climbing as chimps, a new study suggests.
07 April 2009, 05:58 PM ET
A new study found that wild chimpanzees exchange meat for sex.
30 March 2009, 03:12 PM ET
We pay a price for our fine motor skills.
24 March 2009, 04:46 AM ET
When the mood strikes her, Bonnie the orangutan whistles.
26 February 2009, 09:00 AM ET
"You make me sick" —this metaphor for disapproval can also be very real disgust.
06 February 2009, 04:39 AM ET
For some odd reason, it takes constant reminders that we primates need nurturing.