Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The average home creates more pollution than does the average car.
33
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Sound travels about 4 times faster in water than in air.
408
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Iron weighs more after it rusts.
68