Iron weighs more after it rusts.
16
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Each day, up to 150 species of life become extinct.
-23
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Sound at the right vibration can bore holes through a solid object.
134
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Indoor pollution is 10 times more toxic than outdoor pollution.
62