The bark of an older redwood tree is fireproof.
65
One third of the electricity produced on earth is used to power electric light bulbs!
75
Diamonds can be shattered with a hammer.
-104
Sound travels fifteen times faster through steel than through air.
134
Research indicates that plants grow healthier when they are stroked.
173
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199