The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The only letter not appearing on the Periodic Table is the letter "J".
180
Balsa wood is classified as a hard wood!
41
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
One barrel of petroleum holds 42 gallons.
20