The earth is approx. 6,588,000,000,000,000,000 tons.
175
The sun is 330,330 times larger than the earth.
75
A ball of glass will bounce higher than a ball made of rubber.
73
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Pure water (H2O) does not conduct electricity on its own.
46