Bill Gates thinks travelling to Mars is not a good use of money.
The Microsoft billionaire has said that he would rather pay for life-saving vaccines than squander cash on expeditions to the Red Planet, as his fellow entrepreneur Elon Musk plans to do.
In an interview with the BBC, Gates said: "It's actually quite expensive to go to Mars. You can buy measles vaccines and save lives for $1,000 per life saved.
"And (so) that just kind of grounds you, as in - don't go to Mars."
Musk's SpaceX company has made it an ultimate goal to send crewed flights to Mars and eventually colonise the planet while billionaires Jeff Bezos and Sir Richard Branson have taken part in their own space missions.
Meanwhile, Gates also discussed being the face of conspiracy theories during the coronavirus pandemic as it was claimed that he profited from the global health crisis.
The business magnate, who was formerly the world's richest man, said: "I did not expect that.
"During the pandemic, there were tens of millions of message that I intentionally caused it, or I'm tracking people. It's true I'm involved with vaccines, but I'm involved with vaccines to save lives.
"These messages sort of inverted that. I guess people are looking for the 'boogeyman' behind the curtain, the over-simplistic explanation. Malevolence is a lot easier to understand than biology."
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