Elon Musk , Welcomes 12th Child.br Musk and Neuralink executive Shivon Zilis welcomed their third child together earlier this year, CBS News reports.br Musk recently confirmed the birth in a br 'New York Post' interview but didn't br share the baby's name or sex.br He also addressed rumors br that the birth was a secret.br As for 'secretly fathered,' br that is also false. , Elon Musk, to the 'New York Post'.br All our friends and family know. Failure br to issue a press release, which would br be bizarre, does not mean 'secret.', Elon Musk, to the 'New York Post'.br Musk and Zilis also had twins in 2021, br months before the Tesla and SpaceX CEO br had a second child with Grimes.br Musk and Zilis also had twins in 2021, br months before the Tesla and SpaceX CEO br had a second child with Grimes.br He had a third child with Grimes in 2023.br In a 2022 tweet, Musk said that declining br birth rates represent "the biggest br danger civilization faces by far.".br He also said, "Doing my best to br help the underpopulation crisis.".br Many countries are already well br below replacement rate, and the br trend is that almost all will be. This is br simply a fact, not a 'debunked theory.', Elon Musk, to the 'New York Post'.br Musk also fathered six children with br Justine Wilson, although they lost their first child to Sudden Infant Death Syndrome (SIDS).