Once the rising star of the clean-tech industry, the advanced battery maker faces an uncertain future.
Large sheets made from carbon nanotubes could lead to lighter aircraft and more resilient space probes.
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Oculus reveals its first consumer virtual-reality headset, Oculus Rift, and hand controls for interacting with digital objects and making gestures.
One software startup is taking a different approach to the automation of driving.
Manufactured materials could lead to breakthroughs in batteries, supercapacitors, and eventually carbon-capture systems.
Predicted lithium shortages are leading to novel technologies for recovering the element, now found mostly in salt lakes in South America.
With fresh funding from the Thiel Foundation, startup Medella is going up against Google and Microsoft to build a smart contact lens.
China has rapidly cleaned up its coal plants. Now comes the hard part.
A shift toward software and data analysis has made agriculture a more appealing sector for investors, says leading venture capitalist Brook Porter.
A highly realistic simulated world is proving vital to robotics researchers.
Physicists have overlooked an obvious place to search for shell-like structures constructed around stars by advanced civilizations to capture their energy.
A leading researcher issues a call for pills that deliver a full course of treatment in one swallow.