Heart disease kills about a half-million people every year in the United States. It begins with the clogging of the arteries - which is called atherosclerosis. When there is too much saturated fat and trans fat in the bloodstream, it sticks to the walls, which narrows the passageway that blood must travel through.
The earliest known fossil of a human ancestor, a female Ardipithecus ramidus specimen nicknamed Ardi, is 3.2 million years old. Scientific evidence says that the first modern humans, Homo sapiens, appeared more than 200,000 years ago. Some fossils from the middle Pleistocene period (about 400,000 years ago), referred to as Homo sapiens rhodesiensis, may be archaic Homo sapiens - a transitional species.
Type of Homo Sapiens that lived in Europe and the Middle East between 100,000 and 30,000 B.C. Homo Sapiens Sapiens Wise, Wise Human Being A species that appeared in Africa between 150,000 and 200,000 years ago; they were the first anatomically modern humans Paleolithic Age From the Greek for Old Stone, the early period of human history, from approximately 2,500,000 to 10,000 B.C., during which humans used simple stone tools; sometimes called the Old Stone Age Nomad A person who moves from place to place