The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
If two pieces of metal touch in space, they become permanently stuck together.
808
Contrary to popular belief, plastic cutting boards are more likely to harbor bacteria than wood ones. New plastic boards are easier to clean, but ones with cuts are nearly impossible to completely disinfect, whereas wood ones absorb and kill bacteria, regardless of age or use.
13
Sloths take two weeks to digest their food.
243
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
In one day, adult lungs move about 10,000 litres of air.
11
A cat can jump FIVE TIMES as high as it is tall!
371
