97% of all paper money in the US contains traces of cocaine.
93
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Macklemore and his hit “Thrift Shop” was the first time since 1994 that a song reached number 1 on the Hot 100 chart without the support of a major record label.
2
Only humans shed emotional tears.
331
Passengers on the Beijing subway can pay with plastic bottles.
29
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Author J K Rowling wrote the final chapter of the last Harry Potter book in "something like 1990", seven years before the release of the first book.
7