Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Nearly 50% of the world's scientists are assigned to military projects.
71
The smell of freshly cut grass is actually a plant distress call.
31
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9