Knowledge | Curiosity | Discovery on Instagram: "This footage records a distinct display of avian play behavior in which a crow intentionally utilizes a green plastic disc as a sledding implement to traverse a snow-covered, corrugated roof. The action demonstrates the advanced cognitive faculties of the species, specifically regarding tool manipulation for non-survival purposes, generating viral appeal through the anthropomorphic resonance of recreational sliding and the stark contrast between w

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Explore l Learn l Facts on Instagram: "two-way mirrors used in hotels and special observation rooms are installed with careful control of lighting and positioning. they work because one side is kept brightly lit while the other side remains dark, making the glass act like a mirror on one side and a window on the other. these mirrors are typically mounted into walls just like normal mirrors, with sealed frames and controlled lighting to maintain the effect. without the correct light balance, a tw