In fact, there are more than 1 billion colds in the United States every year, according to the National Institutes of Health. And those facts change as scientists learn more about how colds work. Some people swear by zinc as a means of shortening a cold's duration, but research on that subject has been spotty.
The hard clam (Mercenaria mercenaria), also known as a quahog (or quahaug), round clam, or hard-shell (or hard-shelled) clam, is an edible marine bivalve mollusk that is native to the eastern shores of North America and Central America, from Prince Edward Island to the Yucatan YucatÃ¡n. peninsulaonfusingly, the ocean quahog is a different species, Arctica islandica, which, although superficially similar in shape, is in a different family of bivalves: it is rounder than the hard clam, usually has black periostracum, and there is no pallial sinus in the interior of the shell. Contents.
Ocean quahog clams are well known to live to be very, very old, but itâs not certain why that is. Like other long-lived animals, such as the naked mole rat, the animal has been a subject of much research, in hopes of applying their long-life secrets to humans. The previous Guinness record-holder for oldest clam, before the upstager Ming came along, was a 220-year-old ocean quahog clam pulled from American waters in 1982. A 374-year-old clam, collected in 1968, is also displayed in a German museum, National Geographic reported.