The most powerful laser in the world, the Nova laser at Lawrence Livermore National Laboratory, CA, USA, generates a pulse of energy equal to 100,000,000,000,000 watts of power for .000000001 second to a target the size of a grain of sand.
Healthy nails grow about 2 cm each year. Fingernails grow four times as fast as toenails.
There are more Irish in New York City than in Dublin, Ireland; more Italians in New York City than in Rome, Italy; and more Jews in New York City than in Tel Aviv, Israel.
If you stretch a standard Slinky out flat it measures 87 feet long.
A dwarf star is so dense that it would take 8 men to lift a teaspoon full of its matter.
One ragweed plant can release as many as one billion grains of pollen.
Porcupines float in water.
An Elephant is not afraid of a mouse.
A dragonfly's first six months of life are spent underwater. After this time, it comes out of the water, sheds its outer skin, and starts flying, but if it falls in the water after it has shed its skin, it drowns.
Sea otters have 2 coats of fur.