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Solar Impulse 2 successfully completes maiden voyage

Using only the power of the sun's rays, the souped up lightweight aircraft climbs to nearly 6,000 feet and stays aloft for more than two hours.

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Silver Spring Networks buys French Internet-of-streetlights company

Streetlight.Vision's software means the US company can add new services like pollution monitoring to its wireless networks.

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How OLED lighting aims to be the star of the glow (Q&A)

As costs drop for the easy-on-the-eyes, next-gen tech, Acuity Brands pushes a new range of lighting products. This week, it'll announce the Nomi.

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Behold the new OLED lighting (pictures)

Acuity Brands has introduced four products for places like hotel lounges and meeting rooms. This week it'll debut the Nomi, an OLED light fixture for tighter budgets.

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2014 Ford Fiesta gets by on three cylinders (pictures)

With the EcoBoost option in the SE-trim Fiesta, Ford cranks 123 horsepower from a tiny 1-liter three-cylinder engine.

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Coming soon: A better, poison-free solar cell

Sure, solar power is clean and green, but to make it more efficient, researchers have had to use some nasty stuff. Until now.

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This arcade machine runs on empty plastic bottles

Coca-Cola engages in an environmentally minded publicity stunt by launching an arcade game that takes bottles, not coins.

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Former RIM CEO to lead Canadian agency on green tech

Jim Balsillie, the former co-CEO of BlackBerry maker Research in Motion, is appointed to chair of Sustainable Development Technology Canada.

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Kleiner Perkins closes $525M early stage fund

New fund will focus on investing in digital consumer, digital enterprise, green tech, and life sciences startups.

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Hacking to save the planet. The team from Divya Energy does last-minute touches before demoing their app for calculating savings from solar panels.

The future of clean tech? Try hacking code

The idea of the "cleanweb," or using IT to deal with energy and resource problems, gains ground among entrepreneurs and VCs at weekend hackathon.

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Energy secretary Steven Chu plots the price trends of competing fuels for generating electricity (PV is solar photovoltaics) at the ARPA-E Summit.

Five things we learned at the ARPA-E Summit

Scientific research and entrepreneurship in clean energy is alive and well at the ARPA-E Summit.

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Peas in a pod: Bill Gates and Steven Chu discuss the pathways to a cleaner energy system.

Gates on energy: IT revolution has warped our minds

Forget a Moore's Law for energy tech, says Bill Gates. Moving the energy system away from fossil fuels takes decades of work and multiple scientific breakthroughs.

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