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Historic buildings sure looked good a year ago. What happened? Wikipedia commons We have noted before that the greenest brick is the one already in the wall, and that renovation and restoration are labor-intensive, giving twice as much stimulus bang for the buck than new construction.

photo: Roberto Zingales via flickr. Geoengineering comes in many forms from the benign (planting more trees to soak up carbon, biochar, etc.) to the downright dangerous. This is about one of the latter: Simulating a volcanic eruption by pumping sulphur particles into the atmosphere.

It gets pretty tiresome having to explain that climate change doesn't mean that every region of the world will turn into the Sahara Desert next week.

Photo: Courtesy of Buenos Aires government. If you're thinking about traveling to Buenos Aires, consider taking your bike with you. The promise of 100 kilometers of new bike paths is becoming a reality with new safe, separated-from-traffic lanes popping up in different parts of the city.

Junichi Sato (left), Toru Suzuki (right), and their lead counsel, Yuichi Kaido (center) face reporters at a press briefing following their first pre-trial hearing at Aomori District Court in 2009. Caption and photo: Greenpeace Nearly eighteen months ago two Greenpeace anti-whaling activists were arrested by Japanese police for stealing whale meat from a shipping company.

Climate change may make flowers more fragrant. Photo by Jennifer Hattam. "That which we call a rose by any other name would smell as sweet," Shakespeare famously wrote. And the flowers sweethearts buy for future Valentine's Day gifts may smell even more fragrant, some new research suggests.

"For the US in 2006, online data centres accounted for 1.5 percent of the entire country's electricity use - equating to more than the entire state of Massachusetts. " View the chart up close...Really interesting facts/stats! Image via GDS Digital Energy Star is ratcheting up its evaluation of data center components, moving from certifying servers to certifying entire data centers.

Image credit: Elective Decisions Jeff has already explored a whole variety of diseased and pest ridden trees this week, but the pine bark beetle's march has to be one of the biggest threats to forests in North America.

In the second segment of a three-part article on water in China, Scott Moore argues that new levels of diplomacy will be needed to stave off regional tension.