Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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Sound travels about 4 times faster in water than in air.
408
The smell of freshly cut grass is actually a plant distress call.
31
Iron weighs more after it rusts.
16
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34