The smell of freshly cut grass is actually a plant distress call.
31
Indoor pollution is 10 times more toxic than outdoor pollution.
62
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Iron weighs more after it rusts.
68
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65