Alan Alda explores how much humans and chimps have in common, and what sets us apart. Watch the full episode now.

Alan Alda visits Yale University’s Laurie Santos at a small Caribbean island where she is studying rhesus monkeys’ ability to steal grapes…and read minds.

The Human Spark crew members had to keep our wits about us when we filmed on the Puerto Rican island of Cayo Santiago. It’s home to a free-ranging group of monkeys!

In this video, Laurie Santos pulls a switcheroo on her monkey research subjects. Will they notice when a fruit that starts rolling down a plank as a kiwi reaches the bottom as a lime?

A new study looked at how macaque monkeys respond to other monkeys’ efforts at communication in the form of drumming or vocalizing.

While we can manipulate elaborate equations with square roots and derivatives, new research shows monkeys can “count” audible beeps and equate them to visual representations of the same amount.