Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Your brain is 80% water.
525
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
A ball of glass will bounce higher than a ball made of rubber.
73