Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
11
You see your nose at all times, your brain just chooses to ignore it.
30
Sound doesn't travel in space.
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Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
23
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The United Nations declared the Internet a basic human right in 2011.
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