Modern helmet construction hasn't changed significantly since the adoption of styrofoam impact absorption in the 1960s. But new materials and construction methods are improving safety, in some cases absorbing 30 percent more energy than their styrofoam equivalents. And you can buy helmets made from them today.
The Gadget: Rimless goggles with a locking lens plate for switching up the glass for sunny or cloudy days. A follow up to their I/O googles, but with improved foam sealing and shape.