At least 30 of these viruses can be sexually transmitted. HPV transmission occurs easily among sexual partners. This is evidenced by the fact that at least 50 percent of sexually active men and women acquire a genital HPV infection at some point in their lives.
A farm worker corrals cranberries in a bog during a harvest. Every schoolchild learns that the Pilgrims couldn't have survived life in the New World without the help of the Indians. The tribes taught them which crops to plant. They introduced them to corn and other nutritional mainstays. One of these, the American cranberry, is still part of the classic Thanksgiving feast.
By Jack B. Kemmerer The pre-Cortes inhabitants of Mexico invented the famous tortillas of that country between 2000 and 1000 B.C., when most historians agree that corn began to be cultivated in Guatemala and in southern Mexico. The ancient method of making tortillas by hand had never changed until recently.