Don't go to Mars, you can save lives with vaccines for $1,000 per life: Bill Gates

World's fourth-richest person Bill Gates told BBC that going to Mars is not a good use of money in his view. "It's actually quite expensive to go to Mars...You can buy measles vaccines and save lives for a thousand dollars per life saved," he said. The Microsoft Co-founder further said, "It just kind of grounds you. Don't go to Mars."