By Christine Hsu | Jan 04, 2013 04:18 PM EST
Bonobos will give up their own meal for the company of strangers.
By Christine Hsu | Dec 27, 2012 10:24 AM EST
How do you raise your chances of successfully getting people to contribute their share to charity? Go blonde, suggests a new study.
By Christine Hsu | Dec 26, 2012 03:56 PM EST
Monkeys aren't particularly generous, but a new study revealed that when they do act selflessly, a specific part of their brains keeps count of these kindnesses.
