In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Pumice is the only rock that floats on water.
14
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Each day, up to 150 species of life become extinct.
-23
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Research indicates that plants grow healthier when they are stroked.
173
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5