The bark of an older redwood tree is fireproof.
65
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
The storage capacity of human brain exceeds 4 Terrabytes.
140
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists in Germany have developed a candy that doesn't cause cavities.
11
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
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
Diamonds can be shattered with a hammer.
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