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
The force of a suction cup is calculated using F=AP.
15
Hot water can freeze faster than cold water.
181
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
A cubic yard of air weighs about 2 pounds at sea level.
31
The average home creates more pollution than does the average car.
33