Dutch engineer aims high with latest green roof design

Standing between raised beds of plants on top of a former naval hospital, Joris Voeten can look across to the garden, cafe and terrace that decorate the sloping roof of Amsterdam's NEMO science museum.

Turning sunshine into liquid gold

Tiny metalic-gold particles are being used to convert sunlight into fuel. The technology is being developed in South Australia to store solar energy as an alternative to battery storage.

Feeling smug about your solar rooftop? Not so fast

If you installed solar panels on your roof and feel aglow with environmental virtue, you may be in for a rude awakening. There's a good chance someone else has purchased your halo and is wearing it right now.

How solar panels are making waves

If you think of electrical current flowing like water from the grid to your home, you can start to imagine the waves your rooftop solar panels create when they try feeding current in the opposite direction.

Toward a smarter grid

Steven Low, professor of computer science and electrical engineering at Caltech, says we are on the cusp of a historic transformation—a restructuring of the energy system similar to the reimagining and revamping that the ...

Solar cell efficiency could double with novel 'green' antenna

The use of solar energy in the U.S. is growing, but panels on rooftops are still a rare sight. They cost thousands of dollars, and homeowners don't recoup costs for years even in the sunniest or best-subsidized locales. But ...

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