Brain fibres lose 10% of their total length every decade. They can shrink even more so under acute stress.
100 Mind-Blowing Fibres Facts
Every decade, brain fibres lose 10% of their strength. At times of acute stress, they shrink even more than the average amount. This decline continues between the ages of 20 to 80.
A Banknote Can Be Folded 4,000 Times: Our currency is pretty durable. The Bureau of Engraving and Printing, the sole producer of U.S. paper currency, says it would take 4,000 double folds, forward and backward, for a dollar bill to tear. It might be because paper money isn’t made of paper. It’s a blend of 75% cotton and 25% linen with tiny blue and red synthetic fibres of various lengths evenly distributed throughout the bill.
Money Is Dirtier Than You Think: Both paper currency and coins can carry viruses and bacteria that can live on surfaces and easily transfer to your skin or onto other objects after touching them. Research has found physical currency changes hands at least 55 times a year or almost once a week. One recent study found banknotes made with cotton or linen fibres, such as U.S. dollar bills, present increased areas for germs and the capacity to retain moisture, which can make it an easier place for bacteria to thrive.