The well-known investor behind the likes of Twitter and Foursquare says venture capital funds have gotten too big.
Will cheap natural gas give us an opportunity to reduce emissions while inventing new technologies? Or will we simply become addicted to another fossil fuel?
Novel engine designs could help meet our growing demand for energy.
An improved catalyst could lead to cheaper ways of producing hydrogen from water
Germany has decided to pursue ambitious greenhouse-gas reductions—while closing down its nuclear plants. Can a heavily industrialized country power its economy with wind turbines and solar panels?
A nanoscale pattern could lead to more efficient solar cells
Looking to enter a highly competitive solar market, Alta Devices hopes to use a combination of technological advances and manufacturing savvy to succeed where many others have crashed and burned.
Conductive binders could make high-capacity battery electrodes practical
Chinese manufacturers have dominated the international market for conventional solar panels by building bigger factories faster. Now they will need to innovate to maintain their lead.
Controversy over a proposed oil pipeline from Alberta to Texas is sidetracking us from bigger issues.