Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
Babies are born without knee caps.
78
The yin-yang pattern's earliest use is in Rome - not China!
125
The ashes of the average cremated person weigh nine pounds.
40
