Multi-billionaire Elon Musk said Thursday on Twitter "to do his best to fight the underpopulation crisis" a few hours after press reports reporting that he had had twins in November with an executive of one of his companies.

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The whimsical entrepreneur, already the father of seven living children, has not confirmed or denied this revelation on the social network. But he published several messages in a row referring to the birth rate and the family.

“The collapse of the birth rate is by far the greatest danger facing civilization,” he wrote, for example. Or: "I wish you to have great families and congratulations to those who already have them!"

The boss of Tesla and SpaceX, who regularly shares his vision of a multiplanetary species, also noticed that there was still no one on Mars. And in a joking tone, mentioned the possibility that Tesla would build a self-driving minibus.

According to the specialized site Business Insider, Elon Musk and Shivon Zilis filed a request in April with a court in Texas to give the two babies the name of their father and, as a middle name, the surname of their mother. . The latter, a 36-year-old Canadian, is the director of operations and special projects at Neuralink, a startup specializing in neural implants.

The richest man in the world already had six children with Justine Musk (née Wilson) in the 2000s, one of whom died a few weeks after birth.

He recently posted a photo of four of them during a visit to Pope Francis in Rome. A fifth, a transgender girl, filed a formal request in April to change her surname along with her gender to sever all ties with her father.

He also had two children with musician Grimes, a boy born in 2020 and a girl born in December 2021.