The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
Americans are responsible for generating roughly 20% percent of the garbage in the world.
29
Barbie's full name is Barbara Millicent Roberts.
78
Diamonds mined in Brazil are harder than those found in Africa.
40
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
More than 10% of the world's salt is used to de-ice American roads.
54