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TIL St Paul’s Cathedral in London can be seen from King Henry’s Mound, 16 km (10 miles) away. No building obstructing this view is allowed to be built by law.

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pgde TIL Hippos secrete a “sweat” that is a natural sunblock and anti-bacterial moisturizer. Even though they have skin that is 2’’ thick, they are very susceptible to sunburn and skin cracking if they stay out of the water for too long.
WlE4 TIL that the cast of the 1979 science fiction horror film ‘Alien’ was never told about the chestburster scene in order to capture the authentic fear of the actors
RLA4 TIL Cambridge Bay, Canada has a 0.0% chance of sunshine throughout December
4kpwR TIL about gamification in loyalty programs, which involves incorporating game-like elements such as badges, levels, and challenges to make the program more engaging and motivating for customers.
yVZrw TIL that readiness potentials are a kind electroencephalogram signal that appears before the intention to perform actions, so they were thought to predict awareness of voluntary movement. But this recent study have found them also before the partecipants decided not to move.