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00:01:40
Primatologist Christophe Boesch demonstrates and discusses nut cracking, an aspect of chimpanzee behavior.

00:00:47
Primatologist Christophe Boesch explains that declining chimpanzee populations threatens the study of chimpanzee culture.

00:03:20
Who is more likely to help out, a child or a chimp? Psychologist Felix Warneken explains how his researched found answers to this question.

00:03:02
Do chimps cooperate even when they’re not related? The traditional answer is no, but primatologist Linda Vigilant explains how genetics is revising this belief.

00:01:00
Primatologist Josep Call discusses research designed to test primates’ ability to plan for the future.

00:01:30
Primatologist Josep Call discusses research designed to test primates’ ability to solve problems.

00:01:00
Primatologist Josep Call explains why it would be interesting to know whether primates can remember and repay favors.

00:01:36
Psychologist Felix Warneken explains the importance of observing chimp behavior both in the wild and in controlled experimental environments.

00:01:30
Primatologist Christophe Boesch demonstrates and discusses a hive raiding, an aspect of chimpanzee behavior.

00:02:02
In this interview from Greenland, glaciologist Mark Fahnestock describes the roar of a 1000-foot iceberg dropping off the Jakobshavn Isbræ into the Ilulissat Icefjord. Includes time-lapse photography of this massive calving event.