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.
, works at U.S. Postal Service. The current postage needed for an international postcard stamp is $1.15 for a standard shaped and size one, in fact it's the same price for a letter of 1oz or less. The USPS lowered the rate from $1.20 back to $1.15 in middle of 2016.