Sound travels about 4 times faster in water than in air.
408
Aluminum used to be more valuable than gold!
84
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
4.5 pounds of sunlight strike the Earth each day.
27
Hot water can freeze faster than cold water.
181
Research indicates that plants grow healthier when they are stroked.
173
German chemists made a replica of a trophy the size of one molecule.
68