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The United Nations climate meetings began this week in Peru, a dress rehearsal of sorts for treaty talks in Paris next year. But whether world leaders forge a deal or not, Scientific American's David Biello and environmental economist Robert Stavins say the fight against climate change has already begun—at the state and local level, and in the private sector. Last year, for example, new solar plants outpaced coal installations in the U.S., and carbon-trading schemes across state and national borders have already begun.

Climate Deal or Not, Fight Against Global Warming Has Begun

Ryan Rykaczewski describes one of the most massive migrations on the planet, driven by the sun. Image by Tintinnidguy (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons 

#ExplainTheSun  - The Largest Migration on The Planet

Once, there was the ordinary incandescent light bulb. It shone brightly, but wasted much of the energy put into it as heat. Then came the compact fluorescent. And as costs have dropped, consumers have increasingly been switching to light-emitting diode (LED) technology for many lighting applications, in an ongoing search for a more efficient bulb. Now, in work published in the journal Nature Nanotechnology, researchers report that nanophotonic devices may be able to breathe new life into old incandescent technology. Marin Soljačić and Ognjen Ilic, two authors of the study, explain how they’ve been able to “recycle” some of the incandescent bulb’s wasted heat and re-emit it as visible light, boosting efficiency.

For the Lowly Incandescent Bulb, a Ray of Hope

Science, technology, and other cool stuff from public radio's Science Friday. It's brain fun, for curious people. From WNYC Studios.

Climate Deal or Not, Fight Against Global Warming Has Begun

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