The engine started, the propeller began spinning, and with a high whine the drone shot into the air—before quickly crashing to the ground. It took a few more tries before the drone flew straight, but when it did, it soared into the azure skies above southern Guyana’s grasslands, and the small crew on the ground cheered. The homemade drone zipped toward a mountain range in the distance, transmitting live video and photos as it flew.

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