Balsa wood is classified as a hard wood!
41
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Most dust particles in your house come from dead skin.
48
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9