SEEN & HEARD

摘要

A highlight of the opening ceremony at the Tokyo 2021 Olympics was a revolving globe above the Olympic stadium. The 1,824 Intel Shooting Star 3 drones formed a complex set of geometrical shapes before transitioning into the games' emblem, and then a 3D representation of Earth. The Intel Shooting Star 3 drones are designed for entertainment purposes. Each drone weighs 340 grams, is equipped with four extremely bright LEDs, and features real-time kinematic (RTK) GPS for the increased positional accuracy needed for high-resolution animations, sharp imagery and dvnamic 3D animations. Illegal coffee plantations have appeared inside Bukit Barisan Selatan National Park in Indonesia, a key habitat for the endangered Sumatran tiger and other species. Conservationist Matt Leggett noticed in satellite images the declining size of the forest, and sent a team of researchers on an undercover operation on dirt bikes with cameras and GPS receivers, reports the Aug. 11 New York Times Magazine. Leggetfs team mapped hundreds of small coffee farms and investigated the complex chain of custody, which ends with major brand names. No solution has been found, though some farmers have promised to replant the forest over the next 15 years, while others continue to clear park land.