A baby boy was born from a 20-year-old frozen embryo. With an estimated one million leftover embryos in America, the question of what to do with them poses a big problem to ethicists.
Six new national natural landmarks were designated by U.S. Secretary of the Interior Ken Salazar, helping develop a "conservation ethic for the 21st century."
Six new national natural landmarks were designated by U.S. Secretary of the Interior Ken Salazar, helping develop a "conservation ethic for the 21st century."