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?
IBM has found a new source of revenue: using its mathematicians' formulas in business services.
Twitter plans to become the leader in instant news--and make itself into a sustainable business in the process.
Google is developing a new computing platform equal to the Internet era. Should Microsoft be worried?
The federal government is about to spend billions of dollars on renewable energy. In Part II of our series on the federal stimulus bill, we look at the impact the spending will have on the future of solar power.
The U.S. stimulus bill includes tens of billions to support energy and information technologies. So why are economists and innovation experts so skeptical?
No one really knows how many people visit websites. A San Francisco startup and Google are both working to change that.
Oil-rich Abu Dhabi is building a green metropolis. Should the rest of the world care?
An Indian startup thinks that the right software can make cheap phones a financial lifeline to hundreds of millions.
We profile some of the most innovative ideas of the Social Web.