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How Science Can Help You Open a Locked Door! A passive infrared (PIR) motion sensor is an electronic device that detects motion by sensing changes in infrared radiation, primarily emitted by warm objects like humans and animals. Unlike active sensors, PIR sensors do not emit any signals; instead, they passively detect infrared radiation through two or more pyroelectric elements that generate a voltage when they detect changes in radiation levels. Typically, these sensors have a detection range o
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WWF’s Alexander Nicolas recently came across some camera traps in the forests of the Central Annamite landscape in Viet Nam. Camera traps are a powerful and valuable conservation tool for monitoring species in the wild. They capture images of wildlife and can help detect threats like illegal hunting and logging as well. The USAID BCA project in Viet Nam has been conducting some of the largest camera trap surveys ever in the region, using these devices. Read more: https://wwf.to/3A0qUCK. | World
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