The nucleus of each cell in our bodies contains approximately 1.8 metres of DNA in total, although each strand is less than one millionth of a centimetre thick. This DNA is tightly packed into structures called chromosomes, which consist of long chains of DNA and associated proteins.
The U.S. Postal Service is lowering the price of postage stamps for the first time in 97 years, the agency announced Thursday. The price of a stamp to mail a standard letter will drop from 49 cents to 47 cents on Sunday, Fortune reported. The price of a postcard stamp will fall to 34 cents, down 1 cent.
Standard mail, such as first-class letters and postcards, make up 76% of the Postal Service's sales -- all of which have prices capped by Congress. Postcard stamp prices will drop by a penny to 34 cents, and international stamps will cost $1.15, down from $1.20. There's hardly anyone alive who remembers the last time the price of a stamp fell. That was in July 1919, when first-class stamp prices dropped from 3 cents to 2 cents.