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Ghosts of Machu Picchu

Why did the Incas abandon their city in the clouds?

Extreme Cave Diving

Scientists journey into one of Earth's most dangerous and beautiful underwater frontiers.

Invasion of the Giant Pythons

Florida's Everglades National Park is one of the last great wildlife refuges in the U.S., home to numerous endangered animals and plants. But the park has become a dumping ground for a variety of non-native species, including what may be tens of thousands of Burmese pythons. Follow scientists and snake hunters as they study the problem and try to find solutions to the growing crisis.

Black Mamba

The black mamba is one of Africa's most dangerous and feared snakes. Most people would kill it on sight. But in the tiny country of Swaziland, one husband and wife team has taken a different approach to the mamba. They've initiated a study that they hope will change perceptions of what they feel is the world's most misunderstood snake.

What Will the Future Be Like?

Meet the people building tomorrow's robots, 3-D virtual environments, mind-reading machines, and more.

Inside the Megastorm

Was Hurricane Sandy a freak combination of weather systems? Or are hurricanes increasing in intensity due to a warming climate? How did this perfect storm make search and rescue so dangerous? "Inside the Megastorm" takes viewers moment by moment through Hurricane Sandy, its impacts and the future of storm protection.

Megastorm Aftermath

In October 2012, Megastorm Sandy cut a path of devastation across the Caribbean and the East Coast, killing hundreds and doing tens of billions of dollars in damage. To many, it was a wake-up call. Now, one year after Sandy's deadly strike, NOVA follows up on the 2012 film "Inside the Megastorm" with a fresh investigation of the critical questions raised by this historic storm.

A Walk to Beautiful

2009 Emmy Winner: A powerful story of healing & hope for women in Ethiopia devastated by childbirth injuries. A Walk to Beautiful won the 2009 Emmy Award for Outstanding Informational Program - Long Format.

Extreme Ice

An acclaimed photographer joins scientists to document the runaway melting of glaciers.

Asteroid: Doomsday or Payday?

Will future asteroids trigger massive extinctions—or be mined for precious minerals?

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