With nine children of his own, the richest man in the world Elon Musk tweeted his take on falling birth rates this morning. But this is not the first time the 51-year-old chief executive of Tesla has expressed concerns about what he calls the global underpopulation crisis. It’s a topic he has discussed several times in the past – most recently when news broke that Musk secretly had twins with a top Neuralink executive.
“Population collapse due to low birth rates is a much bigger risk to civilization than global warming,” Elon Musk tweeted this morning. “Mark these words,” he said in a follow-up tweet, adding: “And I do think global warming is a major risk.”
The entrepreneur had expressed similar sentiments back in July after it was reported he had twins with Shivon Zilis, an executive at Neuralink. "Doing my best to help the underpopulation crisis," tweeted Musk. "A collapsing birth rate is the biggest danger civilization faces by far," he added.
How Elon Musk addresses the 'problem'
Elon Musk has fathered 10 children in all, one of whom died shortly after birth. After losing his firstborn son Nevada Alexander Musk, Musk had twins Griffin and Vivian with author Justine Wilson in 2004. He also has triplet sons — Kai, Saxon and Damian — who were born two years later in 2006.
Musk met his first wife Justine Wilson (Canadian) while attending Queen's University in Ontario, Canada, and they married in 2000. In 2002, their first child died of sudden infant death syndrome at the age of 10 weeks. After his death, the couple decided to use IVF to continue their family. They had twins in 2004 followed by triplets in 2006. The couple divorced in 2008 and shared custody of their children. In 2022, one of the twins officially changed her name to reflect her gender identity, and to use Wilson as her last name because she no longer wished to be associated with Musk.
In 2008, Musk began dating English actress Talulah Riley. They married two years later at Dornoch Cathedral in Scotland. In 2012, the couple divorced, before remarrying the following year. After briefly filing for divorce in 2014, Musk finalized a second divorce from Riley in 2016. Musk then dated Amber Heard for several months in 2017; he had reportedly been pursuing her since 2012. Musk was later accused by Johnny Depp of having an affair with Heard while she was still married to Depp. Musk and Heard both denied the affair.
In 2018, Musk and Canadian musician Grimes revealed that they were dating. Grimes gave birth to their son in May 2020. According to Musk and Grimes, his name was "X Æ A-12"; however, the name would have violated California regulations as it contained characters that are not in the modern English alphabet, and was then changed to "X Æ A-Xii". This drew more confusion, as Æ is not a letter in the modern English alphabet. The child was eventually named "X AE A-XII" Musk, with "X" as a first name, "AE A-XII" as a middle name, and "Musk" as the surname.
They also have a daughter, Exa Dark Sideræl Musk, who was born via surrogacy in December 2021.
In December 2021, Grimes and Musk had a second child, a daughter named Exa Dark Sideræl Musk (nicknamed "Y"), born via surrogacy. Grimes revealed the pregnancy and birth in March 2022 in an interview with Vanity Fair. Despite the pregnancy, Musk confirmed reports that the couple were "semi-separated" in September 2021; in an interview with Time in December 2021, he said he was single. In March 2022, Grimes said of her relationship with Musk: "I would probably refer to him as my boyfriend, but we're very fluid." Later that month, Grimes tweeted that she and Musk had broken up again but remained on good terms.
In July 2022, Insider published court documents revealing that Musk had twins with Shivon Zilis, director of operations and special projects at Neuralink, in November 2021. They were born weeks before Musk and Grimes had their second child via surrogate in December. The news "raise[d] questions about workplace ethics" given that Zilis is a direct report of Musk's. Also in July 2022, The Wall Street Journal reported that Musk allegedly had an affair with Google co-founder Sergey Brin's wife, in 2021, leading to their divorce the following year. Musk denied the report.