KEY POINTS
  • The tech billionaire said low and rapidly declining birth rates are "one of the biggest risks to civilization."
  • His comments come as a growing number of people are deciding not to have children, citing concerns such as climate change and inequality.
  • Musk added that too many "good, smart people" think there are too many people in the world and that the population is growing out of control.

Tesla and SpaceX CEO Elon Musk wants people to have more babies.

"There are not enough people," Musk told a Wall Street Journal event Monday. "I can't emphasize this enough, there are not enough people," he said.