One 75-watt bulb gives more light than three 25-watt bulbs.
57
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
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Each day, up to 150 species of life become extinct.
-23
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The average home creates more pollution than does the average car.
33
According to studies, men change their minds two to three times more often than women.
72
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9