Scientists trying to protect the endangered Sumatran orangutan have adopted an unusual tool for their work: Drones. These unmanned aerial vehicles are a quick and inexpensive way to monitor orangutans and their habitat. The World's science correspondent Rhitu Chatterjee explains the technology to The World's Marco Werman.

  • Sumatran Orangutan (Photo: Flickr The Evo Guy)

  • Sumatran Orangutan (Photo: Flickr Creative Commons: The Evo Man)

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