The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Passengers on the Beijing subway can pay with plastic bottles.
29
A million dollars' worth of $100 bills weighs only 22 pounds!
32
All the gold ever mined could be molded into a cube 60 feet high and 60 feet wide.
38
Linen can absorb up to 20 times its weight in moisture before it feels damp!
46
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
Approximately 60% of the water used by households during the summer is used for watering flowers and lawns.
79
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63