Drones help monitor illegal logging and gold mining in Guyana (Credit digital-democracy.org)

The Wapichan or Wapishana tribe of Guyana is an isolated community of fewer than 6,000 people that live on the edge of the rainforest around South America's Rupununi Savannah, one of the world's largest open ranges of savannah lands. Located in Guyana between the Rupununi River and the Brazilian border, the 5,000 square mile area of pristine grasslands, swamplands, and rain-forested mountains has been the source of food and water for the tribe for centuries. Unfortunately, their means of subsistence is now being threatened by illegal logging and gold mining activities.