Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
12
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
One human hair can support 3 ounces.
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Passengers on the Beijing subway can pay with plastic bottles.
29
Coins usually survive in circulation for about 30 years.
66
The largest hotel suite in the world is located 22 stories under the surface in the Grand Canyon Caverns. One night for two people in this 65 million year old cave is $700.
4
One in five long-term love relationships began with one or both partners being involved with others.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14