Cold water weighs more than hot water.
93
Iron weighs more after it rusts.
16
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
A ball of glass will bounce higher than a ball made of rubber.
73
The average home creates more pollution than does the average car.
33
Nearly 50% of the world's scientists are assigned to military projects.
71
