The automaker is focusing on hybrids instead, intending to produce 21 models by 2015.
When he tired of arguing with climate change skeptics, one programmer wrote a chatbot to do it for him.
Some studies suggest we can easily drop nuclear and fossil fuels, but they raise serious questions.
Shale gas and new oil-extraction technology are changing the energy map, but global demand is also set to grow.
A few countries have scaled back in response to the disaster, but many others are building or planning new nuclear reactors.
A new engine design could significantly improve fuel efficiency for cars and SUVs, at a fraction of the cost of today’s hybrid technology.
Not only does student participation decline dramatically throughout the new generation of Web-based courses, but the involvement of teachers in online discussions makes it worse.
The advanced-biofuels industry is in danger of withering away.
Building solar and wind projects in the wrong place is wasting billions of dollars in Europe.
Several ex-NASA officials are behind a company that plans to offer trips by 2020.