Harvard research concludes gun deaths and firearm ownership are related. See more

Hydrogen is an explosive gas. Oxygen supports combustion. Yet when these are combined it is water which is used to put out fires. See more

Electricity doesn't move through a wire but through a field around the wire. See more

More than 50% of the people in the world have never made or received a telephone call. See more

Wearing headphones for just one hour will multiply the number of bacteria in your ear 700 times. See more

A 'jiffy' is an actual unit of time for 1/100th of a second. See more

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning before you will die of oxygen deprivation. See more

Due to gravitational effects, you weigh slightly less when the moon is directly overhead. See more

The screwdriver was invented before the screw. See more

111,111,111 x 111,111,111 = 12,345,678,987,654,321. See more

Intelligent people have more zinc and copper in their hair. See more

Men can read smaller print than women; women can hear better. See more

The first domain name ever registered was Symbolics.com. See more

Every single "all a's" domain name, from a.com to aaa..aaa.com (63 a's) has been registered! See more

Every single possible 3-character .com domain (over 50,000) has long since been registered! See more

Plants that are not cared for will cry for help, a thirsty plant will make a high-pitched sound that is too high for us to hear. See more