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If You Don’t Want To Get Caught On A Thermal Camera, A Polar Bear Can Do The Trick

We all emit infrared radiation; this is what makes us visible to thermal cameras. Similar to polar bears emit infrared radiation but the structure of the coat prevents this, thus fur are always hot, remains equal to the temperature of the outside air. In this way, polar bears manage to maintain their body temperature in the polar cold.

Source: Harvard University

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