Sound at the right vibration can bore holes through a solid object.
134
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
If the chemical sodium is dropped into water it will immediately and violently explode.
67
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
Nearly 50% of the world's scientists are assigned to military projects.
71
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Liquid TIDE laundry detergent glows under a blacklight.
96