http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Rising water temperatures are kicking up more powerful winds on Lake Superior, with consequences for currents, biological cycles, pollution and more on the world's largest lake and its smaller brethren. http://www.physorg.com/news177515344.html Space & Earth Sun, 15 Nov 2009 13:53:30 EST news177515344 (PhysOrg.com) -- Nicholas Turro of Columbia University, Bernhard Krautler of the University of Innsbruck, Austria and their colleagues have found that, as chlorophyll ages and begins to disintegrate in banana peels it does not change color in the spectrum of visible light we see. Instead, it glows blue when observed under ultraviolet light. http://www.physorg.com/news171740114.html Chemistry Wed, 09 Sep 2009 18:49:02 EST news171740114 An international team of researchers has modified chlorophyll from an alga so that it resembles the extremely efficient light antennae of bacteria. The team was then able to determine the structure of these light antennae. This is the first step to converting sunlight into energy using an artificial leaf. http://www.physorg.com/news165514968.html Chemistry Mon, 29 Jun 2009 17:23:19 EST news165514968 (PhysOrg.com) -- An international team of scientists has determined the structure of the chlorophyll molecules in green bacteria that are responsible for harvesting light energy. The team's results one day could be used to build artificial photosynthetic systems, such as those that convert solar energy to electrical energy. A research paper about the discovery will be published on 4 May 2009 in the Proceedings of the National Academy of Sciences. http://www.physorg.com/news160676286.html Biology Mon, 04 May 2009 17:18:41 EST news160676286 Measurement of chlorophyll fluorescence is an effective way of determining how well plants can cope with low-water conditions. The technique described in the open access journal Plant Methods, published by BioMed Central, allows a quantitative and precise determination of viability in intact, drought-stressed plants. http://www.physorg.com/news145708573.html Biology Wed, 12 Nov 2008 10:36:13 EST news145708573 (PhysOrg.com) -- Ripe bananas are of course yellow. However, under black light, the yellow bananas are bright blue, as discovered by scientists at the University of Innsbruck (Austria) and Columbia University (New York, USA). The team, headed by Bernhard Kräutler, reports in the journal Angewandte Chemie that the blue glow is connected to the degradation of chlorophyll that occurs during ripening. In this process, colorless but fluorescing breakdown products of chlorophyll are concentrated in the banana peel. http://www.physorg.com/news143457581.html Chemistry Fri, 17 Oct 2008 10:19:41 EST news143457581