When did you become a human being?

From Newsmax, more to worry about from the President:
President Barack Obama's top science adviser John Holdren is best known today as a staunch believer in the dangers of global warming, but in the 1970s he was an abortion proponent who questioned whether an offspring is actually a "human being" even at birth.

Holdren, director of the White House Office of Science and Technology Policy, in 1973 co-authored the book "Human Ecology: Problems and Solutions."

It contained this passage: "The fetus, given the opportunity to develop properly before birth, and given the essential early socializing experiences and sufficient nourishing food during the crucial early years after birth, will ultimately develop into a human being."

"Human Ecology" argued that the human race faced dire consequences unless population growth was stopped.