Balsa wood is classified as a hard wood!
41
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Sound travels fifteen times faster through steel than through air.
134
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
One cubic foot of gold weighs more than 1,200 pounds!
78
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Hot water can freeze faster than cold water.
181
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21