Have you ever wished you could add extra memory to your brain? Elon Musk may be able to help you with that.

Musk heads the company best known for Tesla, the industry-leading electric carmaker. He is also the CEO of SpaceX, which is building rockets so that humans can live on Mars. Now Musk has revealed that he is the founder and chief executive of Neuralink, a startup seeking to create cerebral implants that will turn computers into a direct extension of our brains and thus enhance our intelligence and memory.

Musk's various projects have a single overarching aim: to safeguard the future of our species. Electric cars improve our chances of preventing dangerous levels of global warming. A permanent settlement on Mars would reduce the risk of climate change — or a nuclear war, bioterrorism, or asteroid collision — wiping out our species.