Kalahari: Land of Secret Alliances

The unlikely collaborators working to ensure mutual survival in the Kalahari Basin; an elephant clan's symbiotic link to fruiting anaboom trees, a meerkat's alliance with a feisty drongo bird, and more flora-and-fauna odd couples.

Thirst for rain alongside the animals of the Kalahari as elephant herds cooperate, and meerkat's adopt a strange babysitter in the depths of a brutally dry year.

Track scientists arrive in the Kalahari to test the hypothesis that animal collaboration is the key to the dizzying diversity of the region's species; they monitor behavior, decipher data, and deliver conclusions.