A respectable number of penguins are eaten by the various seals. Once a parent is dead, the life expectancy of the chick falls, because there is only one parent left to feed it. read more
Heart disease is the leading cause of death for both men and women in the U.S. and also the leading cause of death worldwide. More than half of the deaths that occur as a result of heart disease are in men. Heart disease is a term used to describe several conditions, many of which are related to plaque buildup in the walls of the arteries. read more