A growing number of tech moguls are trying to solve their biggest problem yet: Aging. From reprogramming DNA to printing organs, some of Silicon Valley's most successful and wealthy leaders are investing in biomedical research and new technologies with hopes of discovering the secret to living longer. And their investments are beginning to move the needle, said Zoltan Istvan, futurist and transhumanist presidential candidate. "I think a lot of the most important work in longevity is coming from a handful of the billionaires," Istvan told Tech Insider. "There are approximately six or seven billionaires that are very ... (full story)