Why You Shouldn’t Put Your Money Where Your Mouth Is - WSJ.com
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Dirty Dollars
In the first genome study of the DNA on money, NYU researchers identified 3,000 types of bacteria on a set of one-dollar bills collected in New York.
Total DNA found: 1.2 billion segments
Percentage human: 27%-48%
Bacterial DNA: 54 million segments
Sampler of bacteria identified:
Acinetobacter species: antibiotic-resistant infections
Staphylococcus aureus: skin infections
Bacillus cereus: food-borne illness
Escherischia coli: food poisoning
Helicobacter pylori: gastric ulcers
Corynebactrium diptheriae: diphtheria
Material: Cotton-linen blend.
Lifetime: 21 months
Weight: 1 gram. Since there are 454 grams in one pound, there are 454 dollar notes in one pound.
Bulk: 1 million dollar bills stacked in a square would measure about four feet tall, four feet wide and four feet thick.
Wear and tear: About 4,000 double folds (forward and backward) are required before a dollar note will tear.