If the chemical sodium is dropped into water it will immediately and violently explode.
67
Most dust particles in your house come from dead skin.
48
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The smell of freshly cut grass is actually a plant distress call.
31
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The force of a suction cup is calculated using F=AP.
15