Hot water can freeze faster than cold water.
181
The smell of freshly cut grass is actually a plant distress call.
31
Iron weighs more after it rusts.
16
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Nearly 50% of the world's scientists are assigned to military projects.
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39