The little bags of netting for gas lanterns (called 'mantles') are radioactive...so much so that they will set of an alarm at a nuclear reactor.
138
In Albania, nodding your head means 'no' and shaking your head means 'yes'.
202
Oak trees do not have acorns until they are fifty years old or older.
155
Real diamonds can be made from peanut butter!
549
In the US, people can be rejected from joining the police force if they are too intelligent.
45
Whispering is more wearing on your voice than a normal speaking tone.
443