Sound doesn't travel in space.
255
Putting sugar on a wound or cut will greatly reduce pain and speed up the healing process.
25
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Sunflowers can be used to clean up radioactive waste.
17
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
People who have a strong friendship possess the ability to communicate with one another through facial expressions.
46