Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The smell of freshly cut grass is actually a plant distress call.
31
Aluminum used to be more valuable than gold!
84
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
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