Photo: Apes Laugh, Tickle Study Finds



Look like laughter to you? A researcher tickles a young orangutan named Naru for a June 2009 study that concluded that great apes laugh like humans.

The finding suggests that human laughter originated more than ten million years ago in a common ancestor of great apes and humans, the study says.

Photograph by Miriam Wessels/University of Veterinary Medicine, Hannover, Germany


NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.