A solar-powered airplane finished crossing the United States on Saturday, landing in New York City after flying over the Statue of Liberty during its historic bid to circle the globe, the project team said. The spindly, single-seat experimental aircraft, dubbed Solar Impulse 2, arrived at New York's John F. Kennedy International Airport at about 4 a.m. local time after it took off about five hours beforehand at Lehigh Valley International Airport in Pennsylvania, the team reported on the airplane's website. Such a pleasure to land in New York! For the 14th time we celebrate sustainability," said the project's co-founder Andre Borschberg on Twitter after flying over the city and the Statue of Liberty during the 14th leg of the trip around the globe. The Swiss team flying the aircraft in a campaign to build support for clean energy technologies hopes eventually to complete its circumnavigation in Abu Dhabi, where the journey began in March 2015. The solar cr...
Unlike other lakes in the region, its anoxic layers begin at depths where sunlight still penetrates. (Typically, in sunlit layers, photosynthesizing organisms spit out oxygen as part of their respiration.)
Ian Hawes, a researcher at the University of Canterbury in New
Zealand, was diving with UC Davis graduate student Tyler Mackey, when the pair noticed green mats of cyanobacteria, a type of bacteria that use photosynthesis to survive. They found that the bacteria were generating a layer of oxygen 0.08 inches (2 millimeters) thick in the otherwise oxygen-free water.The Antarctic lake could thus provide a "natural laboratory" for studying the signatures of local oxygen pockets, the researchers reported Aug. 21in the journal Geology. Geoscientists could then look for those same signatures in ancient rocks, perhaps those dating to before the oxidation event.
For now, the researchers plan to study how these local oxygen oases affect the anoxic water around them, as well as the sediments in the lake.
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