As the story goes, when billionaire innovator Elon Musk was deciding what he wanted to do with his life, he asked himself the question: "What will most affect the future of humanity?"
He came up with five answers: space exploration (and colonization), sustainable energy, the internet, artificial intelligence, and the ability to reprogram the human genetic code, or genome.
We know that Musk fears that artificial intelligence could end the human race — that it might be "summoning the demon" — and we know his work with Tesla, PayPal, and SpaceX, which represent his best-known ventures into sustainable energy, the internet, and space.
But why hasn't Musk ventured into genetic editing? After all, we're now at a time when Silicon Valley billionaires are all about the quest to defeat death, and we've recently discovered CRISPR, an incredibly powerful and effective gene editing tool.
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