A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
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
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Most dust particles in your house come from dead skin.
48
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One ragweed plant can release as many as one billion grains of pollen!
51