The bark of an older redwood tree is fireproof.
65
Out of all the senses, smell is most closely linked to memory.
146
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
Nearly 50% of the world's scientists are assigned to military projects.
71
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The only letter not appearing on the Periodic Table is the letter "J".
180
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39