It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
In zero gravity, a candle's flame is round and blue.
16
One cubic foot of gold weighs more than 1,200 pounds!
78
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Liquid TIDE laundry detergent glows under a blacklight.
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