Record levels of atmospheric carbon dioxide reflect a healthier economy, cheap fossil fuels, and the absence of effective carbon-reducing policies.
Tesla and Solar City say their vast manufacturing operations will make solar the cheapest source of electricity in the United States.
Google X research lab boss Astro Teller says experimental wireless balloons will test delivering Internet access throughout the Southern Hemisphere by next year.
Monsanto and others look to RNA interference to fight widespread bee-killing mites.
Robots are starting to collaborate with human workers in factories, offering greater efficiency and flexibility.
A new kind of time travel based on quantum teleportation gets around the paradoxes that have plagued other time machines, say physicists.
After more than a decade of disappointment, powerful new drugs based on a Nobel-winning idea are getting closer to the market.
A California-based company is commercializing an abundant, naturally occurring material that can turn waste heat into power.