The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Sound at the right vibration can bore holes through a solid object.
134
The bark of an older redwood tree is fireproof.
65
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Diamonds can be shattered with a hammer.
-104
One barrel of petroleum holds 42 gallons.
20
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55