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.
USPS raises price of stamps. The U.S. Postal service is now charging Americans a penny more for stamps and postcard mailings. The price of a first-class stamp for domestic mail rose Sunday from 45 cents to 46 cents, while postcards cost 33 cents to send. The USPS rolled out the pricing changes alongside a new stamp â the Global Forever â which lets people mail one-ounce letters to anywhere in the world for $1.10. Other new services include free tracking for packages and the option of receiving a signature upon delivery for critical mail items, WALA reports.