32 Random Facts To Fill Up the Empty Space Between Ears – Part 39

The Aztecs made swords (Macuahuitl) embedded with prismatic obsidian blades that are far sharper than even high-quality present day steel razor blades.

27. People from different languages arrange pictures of chronological events differently (English speakers from left to right, Hebrew from right to left), and the Kuuk Thaayorre will arrange them from east to west regardless of the direction they face in the room.

28. Smile Mask Syndrome is a psychological disorder in which subjects develop depression and physical illness as a result of prolonged, unnatural smiling. First described in Japan in 1983, this is attributed to the great importance placed on smiling in the Japanese service industry.

29. Killer whales can and do regularly eat swimming moose.

30. NASA recovered metal from the WTC and used it on Martian rovers as a tribute to those fallen on the 9/11 attacks.

Heroin use among US adults went from 0.33% to 1.6% from 2001 to 2013.

32. President Carter's son (Chip Carter) and Willie Nelson once got high together on the roof of the White House.