If you're worried about the privacy of your genetic data, you're standing in the way of technological breakthroughs that could drastically extend the human lifespan, according to Bill Maris, the CEO of Google Ventures. Maris founded Calico, a biotech company established by Google in 2013 that is waging war on aging.

"If we each keep our genetic information secret, then we're all going to die," Maris said onstage yesterday at the Wall Street Journal tech conference in California, as Bloomberg reports.

We leave our DNA everywhere we go, Maris points out. And he's right about that—whether it's a stray hair left on the floor, or saliva remnants on your used coffee cup, DNA-carrying cells are leaving a trail wherever you go. Someone who wanted that information could retrieve it fairly easily. "What are you worried about?" Maris asks skeptics.