The bark of an older redwood tree is fireproof.
65
German chemists made a replica of a trophy the size of one molecule.
68
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
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Out of all the senses, smell is most closely linked to memory.
146
One 75-watt bulb gives more light than three 25-watt bulbs.
57