Nanotech's Big Ideas: From Tumor Zappers to Space Elevators

Some of today's biggest science innovations are happening at the smallest scales. Nanotech

— "nano" is short for "nanometer," referring to length scales in billionths of a meter — describes technologies that are built to perform complex tasks, but at the scale of molecules or even atoms. To put that into perspective, a structure called a nanotube is 1 nanometer in diameter — about 100,000 times smaller than the width of a human hair, according to the National Nanotechnology Initiative. Thanks to nanotech, engineers can design microprocessors for your smartphone that are smaller and more efficient than ever. In addition, gadgets in the not-too-distant future could incorporate sophisticated security safeguards powered by nanotech. Scientists are also exploring how nanotech can deliver medical treatments that target genes themselves. Or build cables strong enough to support an elevator in space, according to a panel of experts at Future Con, a conference highlighting the intersection between sci-fi and cutting-edge science that was held June 16-18 in Washington, D.C. [5 Amazing Technologies That Are Revolutionizing Biotech]