Balsa wood is classified as a hard wood!
41
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The bark of an older redwood tree is fireproof.
65
Most dust particles in your house come from dead skin.
48
Research indicates that plants grow healthier when they are stroked.
173