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Qatari scientists claim to have cracked the problem of shade for crowded stadiums during the 2022 World Cup: Artificial clouds.

The technique relies on "synchrotron" light, emitted from a particle accelerator, and could have uses ranging from biofuel production to art conservation. A new imaging technique provide high-resolution images of the molecular composition of tissues

Novozymes , a biotechnology company that does everything from building better biofuels to removing trans fats in foods, has figured out how to sustainably transport large amounts of live fish across long distances. The company's venture into live fish transportation came about as part of a partnership with Aqualife, a Danish cleantech logistics company that specializes in the global fishing industry. When a caviar production facility in Abu Dhabi asked Novozymes if it could transport 140 metric tons of live sturgeon from Germany, the company had a solution: move the fish by sea freight using specially designed Aqualife containers and Novozymes' microorganisms

Art may not be able to solve our most pressing environmental problems, but it can at least bring attention to them.

The sustainability movement is stuck in a slump, a stall, a "trough," as moderator Scott Henderson of CauseShift called it on the PepsiCo Plugged-In Stage at SXSW yesterday. He wanted to give it a kick-start, he said. "How to we get past the idea that someone else is going to take care of it, and start taking action?" Henderson asked his three panelist to present big ideas for how to inspire Americans into action--and these weren't your typical green-is-good approaches

Dear EarthTalk : I heard someone say that the environmental benefits of natural gas for electricity generation were overstated, and that it is not as green-friendly as the industry would have us believe. What is your take on this