If you have a car remote and you step out of its range, point it to your head and it will work again! See more

The cigarette lighter was invented before the match. See more

The can opener was invented 48 years after cans were introduced. See more

The typical laboratory mouse runs 2.5 miles per night on its treadmill. See more

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

55% of people yawn within 5 minutes of seeing someone else yawn. Reading about yawning makes most people yawn. See more

Banging your head against a wall uses 150 calories an hour. See more

You use over 70 muscles to say one word. 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