4.5 pounds of sunlight strike the Earth each day.
27
One third of the electricity produced on earth is used to power electric light bulbs!
75
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
German chemists made a replica of a trophy the size of one molecule.
68
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Iron weighs more after it rusts.
68