Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A ball of glass will bounce higher than a ball made of rubber.
73
A cesium atom in an atomic clock beats over nine billion times a second.
43