The author argues that the current rate of scientific advances is leading to a convergence of "biological, algorithmic, and micromechanical innovations necessary to build a desktop gene printer." He calls for more careful assessment and regulation of these technologies.

Rather than infer that nanotechnology is safe, members of the public who learn about this novel science tend to become sharply polarized along cultural lines, according to a study conducted by the Cultural Cognition Project at Yale Law School in collaboration with the Project on Emerging Nanotechnologies.

A growing number of experts say it is time for broad discussion of how and by whom geoengineering should be used, or if it should be tried at all. Similar questions are being raised about nanotechnology, robotics and other powerful emerging technologies. There are even those who suggest humanity should collectively decide to turn away from some new technologies as inherently dangerous.

A survey of recent studies and projects to bridge the nanotechnology regulatory gap in the developing world.

A molecule-sized switch just 50 nanometers wide may someday control microscopic machines and also could make DNA sequencing faster, less expensive, and more precise.

Two environmental activist groups have petitioned the U.S. government to pursue new regulations on numerous products such as sunscreens and cosmetics that contain potentially hazardous nanoparticles but lack adequate warning labels of their possible health effects.

Is it possible to make a cable for a space elevator out of carbon nanotubes? Not anytime soon, if ever, says Nicola Pugno of the Polytechnic of Turin, Italy. Pugno's calculations show that inevitable defects in the nanotubes mean that such a cable simply wouldn't be strong enough.

"Individuals are getting more and more powerful," says author Glenn Reynolds in his insightful new book, An Army of Davids. "With the current rate of progress we're seeing in biotechnology, nanotechnology, artificial intelligence, and other technologies, it seems likely that individuals will one day -- and one day relatively soon -- possess powers once thought available only to nation-states, superheroes, or gods.