Bill Gates said he'd rather fund vaccines to 'save lives' than go to Mars, but he thinks someday Elon Musk will be a 'great philanthropist'

Susan Walsh/AP; Mike Cohen/Getty Images for The New York Times

• Bill Gates told the BBC he does not think traveling to Mars is a good use of money.
• "You can buy measles vaccines and save lives for $1,000 per life saved," Gates explained.
• He also said he thinks Elon Musk has had a positive impact through Tesla even though it's not philanthropic.

Microsoft co-founder Bill Gates said he'd rather pay for life-saving vaccines than spend money going to Mars...