Earth is the only planet in our solar system known to support life.
The average person is more than five times as likely to die in a human-level extinction event as in a car crash.
If humans are still developing or if they have reached their evolutionary age, researchers are uncertain.
In Biological Language, bugs are considered insects that "suck".
The rate of acceleration when a flea hop is 20 times that of the space shuttle during launch.
On each human's skin, there are more living creatures than there are humans on the earth's surface.
If you could drive your car straight up, in just over an hour, you will arrive in space.
In a lifetime, the average person walks the equivalent of three times around the planet.
A cumulus cloud of medium size weighs around the same as 80 elephants.
To travel around the World, the light will take 13 seconds.