Balsa wood is classified as a hard wood!
41
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
One barrel of petroleum holds 42 gallons.
20
Indoor pollution is 10 times more toxic than outdoor pollution.
62
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12