More than 1 million in-utero babies have been aborted every year in the U.S. since the Supreme Court declared abortion a constitutionally protected right 40 years ago today. Most of those abortions occur in the second half of the first trimester. Watch the segment above of a National Geographic documentary on the human baby’s development in the womb. The baby you see developing its kick instinct inside its mother is younger than about a third of all babies aborted.