The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
You can start a fire with ice.
367
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
24
In Monopoly, the character locked behind the bars is called Jake the Jailbird. Officer Edgar Mallory sent him to jail.
65
Barbie's full name is Barbara Millicent Roberts.
78
Passengers on the Beijing subway can pay with plastic bottles.
29
The glue on Israeli stamps is certified kosher.
67