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Special Report

New Solutions for Clean Energy

As the world continues to grapple with energy-related pollution and poverty, can innovation help?

  • March 14, 2011

What is the smart grid anyway? [Video]

The smart grid. Sounds good, right? But what exactly is it? And does that mean we have a dumb grid now?"The grid, it is smart today," Laura Ipsen, a senior vice president at Cisco, told the Advanced Research Projects Agency for Energy (ARPA-e) conference on March 2.

March 22, 2011 — David Biello

Storing megawatts: Liquid-metal batteries and electricity

Making aluminum requires a lot of electricity. That's because the metal bonds tightly to oxygen and it takes a lot of energy to break that bond. In essence, the process of making aluminum is a giant battery with the silvery metal being reduced to purity at the cathode while oxygen bonds with the carbon anode to make, you guessed it, CO2.

March 9, 2010 — David Biello

Sunshine is free, so can photovoltaics be cheap?

Here's how to make a solar cell from silicon: take one solid block of doped silicon, saw it into thin wafers, layer said semiconductors beneath a panel of transparent glass, connect them to a metal electrode that can channel away the electrons knocked loose by incoming photons and turn it into a photovoltaic device.

March 10, 2010 — David Biello

Can solid-oxide fuel cells like the Bloom box remake the energy landscape?

The fuel cell has a long history. Various types of fuel cells have been part of the NASA space program, and the basic science of how fuel cells work—an energy carrier comes in, creates a flow of charge in the anode, which migrates to the cathode creating a current, and separated by some form of electrolyte—has been known for more than a century.

March 5, 2010 — David Biello
"Energy Star" Cities Make Gains

"Energy Star" Cities Make Gains

EPA list of cities with the most energy-efficient buildings shows dramatic growth

March 17, 2011 — Douglas Fischer and Daily Climate

Can the U.S. build a clean, green economic machine?

Can cleaner sources of energy not only power our economy but also drive a recovery from the Great Recession? That's the question confronted by policymakers across the U.S.—and by debaters in the Intelligence Squared series held March 8 at New York University.

March 9, 2011 — David Biello

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