Materials Scientists Build Chlorophyll-based Phototransistor
Coat a layer of graphene with chlorophyll and you get a remarkably sensitive light-activated switch, say physicists
Story Archive
America's Petrochemical Landscape
Beyond the drilling rigs, the fossil-fuel industry spreads far and wide across the land.
A Chocolate Maker’s ?Big Innovation
In transforming the way cacao farmers supply manufacturers, a ?San Francisco startup is creating a superb product.
Greener Plastics
Plastics have become synonymous with waste, but they can be made sustainably.
Flying Robots
Compact unmanned aerial vehicles will perform many valuable jobs if aviation regulations allow them to operate commercially.
Deleting Memories
Techniques that can soften or erase memories raise many ethical questions.
Adapting to Automation
From different angles, two of our feature stories explore the role of humans in an automated world.
Untapped Potential
A 1938 article anticipated the opportunities—and challenges—of harnessing the sun’s energy.
Selectively Targeting Aerosol Pollutants Could Reduce Climate Change
Zeroing in on black carbon may slow the effects of greenhouse-gas emissions.
Ben Waber, PhD ’11
Mining data to help companies improve
