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 at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The smell of freshly cut grass is actually a plant distress call.
31
One barrel of petroleum holds 42 gallons.
20
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
In zero gravity, a candle's flame is round and blue.
16