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BrDvK TIL that hippo sweat contains a chemical that has an SPF factor to prevent them from getting sunburned.
7r7nZ TIL about LIDAR, similar to SONAR and RADAR, this technology bounces light off of the Earth to map features of the land. Even peering through dense forest, it's changing how all sorts of fields of study see the land's topography.
BrD8x TIL Crowing first at dawn is a privilege reserved for the highest ranking rooster.