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.
13 January 2009, 04:12 AM ET
A new area of the cerebral cortex evolved to enable humans and higher primates to use tools.
02 January 2009, 06:40 AM ET
Any research that informs us about language production is important because words are what make humans special.
18 December 2008, 05:26 AM ET
Researcher film cat movement, find is energy inefficient, but keeps them stable.
08 December 2008, 06:44 AM ET
Dogs feel simple form of envy when rewarded unfairly compared to another dog.
18 November 2008, 08:40 AM ET
The primates were lurking in a cloud forest in Indonesia.
10 November 2008, 07:00 AM ET
The acrobatic primate has four species, not just two as was previously thought.
07 November 2008, 05:08 AM ET
Humans are creatures who need leaders.
31 October 2008, 04:54 AM ET
A scientist studies lemurs, the crown jewels of evolution in Madagascar.
17 October 2008, 05:56 AM ET
When humans get stressed, often their pets take on that stress, too.
13 October 2008, 08:14 AM ET
Chimpanzees are known to form bands to hunt and kill monkeys. Now Bonobos, too.
03 October 2008, 05:11 AM ET
We pay dearly for the evolutionary advantage of our social connections.
22 September 2008, 07:09 AM ET
Chimpanzees clearly preferred cooked carrots, sweet potatoes, and beef over the raw alternatives.
17 September 2008, 02:53 AM ET
A new study reveals dogs catch yawns from humans.
29 August 2008, 10:44 AM ET
I study chimpanzee health. I want to determine how and why they are getting sick and dying.
28 August 2008, 09:07 AM ET
A new survey reveals two large monkey populations in Cambodia.
18 August 2008, 04:57 AM ET
New research suggests the human visual system processes sound and helps us see.