Out of all the senses, smell is most closely linked to memory.
146
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
German chemists made a replica of a trophy the size of one molecule.
68