An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
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
The left ear is more responsive to words of love and emotion whispered into it than the right.
40