Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
American car horns beep in the tone of F.
66
Approximately 60% of the water used by households during the summer is used for watering flowers and lawns.
79
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
It's impossible to kill yourself by holding your breath.
22
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476
When glass breaks, the cracks move faster than 3,000 miles per hour.
47