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NOVA
Mystery of Easter Island

 

A remote, bleak speck of rock in the Pacific, Easter Island, or Rapa Nui, has mystified the world ever since the first Europeans arrived in 1722. How and why did the ancient islanders build and move nearly 900 giant statues, or moai, weighing as much as 86 tons each? And how did they transform a presumed paradise into a treeless wasteland, bringing ruin upon their island and themselves? NOVA explores controversial recent claims that challenge decades of previous thinking about the islanders, who have been accused of everything from ecocide to cannibalism. Among the radical new theories is that the islanders used ropes to “walk” the statues upright, like moving a fridge. With the help of an accurate 15-ton replica statue, a NOVA team sets out to test this high-risk, seemingly unlikely theory – serving up plenty of action and surprises in this fresh investigation of one of the ancient world’s most intriguing enigmas.

 

NOVA
Inside Animal Minds: Bird Genius

NOVA Inside Animal Minds: Bird Genius

 

Today, researchers are discovering that some creatures have mastered skills purportedly restricted to humans. Many are bird brains. Meet a cockatoo with a talent for picking locks; a wild crow on a mission to solve an eight-step puzzle; and a tame raven who can solve a puzzle box so quickly that his performance has to be captured with high-speed photography. Are these skills really evidence of high intelligence or just parlor tricks, the result of training and instinct?‌ To find out, NOVA tests the limits of some of the planet’s brainiest animals, searching for the secrets of a problem-solving mind.