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Sun, Jun

The U.S. Coast Guard Cutter Healy—one of two working icebreakers in the nation's fleet—concluded a sobering mission Tuesday in the ice-strewn waters north of Barrow, Alaska. The crew's task was to practice deploying equipment they hoped they would never use: new, high-tech gear for responding to a massive oil spill in the Arctic Ocean.

Read more …As Arctic Melts, a Race to Test Oil Spill Cleanup Technology

Lawrence Livermore scientists have discovered and demonstrated a new technique to remove and store atmospheric carbon dioxide while generating carbon-negative hydrogen and producing alkalinity, which can be used to offset ocean acidification. The team demonstrated, at a laboratory scale, a system that uses the acidity normally produced in saline water electrolysis to accelerate silicate mineral dissolution while producing hydrogen fuel and other gases. The resulting electrolyte solution was shown to be significantly elevated in hydroxide concentration that in turn proved strongly absorptive and retentive of atmospheric CO2. Further, the researchers suggest that the carbonate and bicarbonate produced in the process could be used to mitigate ongoing ocean acidification, similar to how an Alka Seltzer neutralizes excess acid in the stomach. "We not only found a way to remove and store carbon dioxide from the atmosphere while producing valuable H2, we also suggest that we can help save marine ecosystems with this new technique,"

Read more …Scientists develop CO2 sequestration technique that produces 'supergreen' hydrogen fuel