Hypersonic Missiles Are Unstoppable. And They’re Starting a New Global Arms Race. The new weapons — which could travel at more than 15 times the speed of sound with terrifying accuracy — threaten to change the nature of warfare. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:The Race for Alaskan Oil: 6 Key TakeawaysThe New Health Care: Why Hospitals Should Let You SleepNASA’s Osiris-Rex Arriving at Asteroid Bennu After a Two-Year JourneyDrilling in the Arctic: Questions for a Polar Bear ExpertIn the Blink of an Eye, a Hunt for Oil Threatens Pristine AlaskaThe Placenta, an Afterthought No Longer