When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
A fire in Australia has been burning for more than 5,000 years!
91
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
People who laugh more are better able to tolerate pain - both physical and emotional.
36
There are 293 ways to make change for a dollar.
148
Each day, more than $40 Trillion Dollars changes hands worldwide.
37
The key to happiness is spending your money on experiences rather than possessions, according to studies.
21