One 75-watt bulb gives more light than three 25-watt bulbs.
57
Research indicates that plants grow healthier when they are stroked.
173
German chemists made a replica of a trophy the size of one molecule.
68
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6