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Keyword: photosynthesis

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  • Scientists discover genetic key to efficient crops

    01/27/2013 7:02:13 PM PST · by Sir Napsalot · 9 replies
    Cornell Univ Chronicles Online ^ | 1-23-2013 | Krishna Ramanujan
    With projections of 9.5 billion people by 2050, humankind faces the challenge of feeding modern diets to additional mouths while using the same amounts of water, fertilizer and arable land as today. Cornell researchers have taken a leap toward meeting those needs by discovering a gene that could lead to new varieties of staple crops with 50 percent higher yields. The gene, called Scarecrow, is the first discovered to control a special leaf structure, known as Kranz anatomy, which leads to more efficient photosynthesis. Plants photosynthesize using one of two methods: C3, a less efficient, ancient method found in most...
  • Photosynthesis: A New Way of Looking at Photosystem II

    06/06/2012 9:35:55 PM PDT · by neverdem · 7 replies
    ScienceDaily ^ | June 6, 2012 | NA
    Future prospects for clean, green, renewable energy may hinge upon our ability to mimic and improve upon photosynthesis -- the process by which green plants, algae and some bacteria convert solar energy into electrochemical energy. An artificial version of photosynthesis, for example, could use sunlight to produce liquid fuels from nothing more than carbon dioxide and water. First, however, scientists need a better understanding of how a large complex of proteins, called photosystem II, is able to split water molecules into oxygen, electrons and hydrogen ions (protons). A new road to reaching this understanding has now been opened by an...
  • MIT Chemist Announces Artificial Photosynthesis, Signs with Tata

    03/28/2011 5:36:18 AM PDT · by Normandy · 26 replies
    Free Energy Times ^ | March 27, 2011
    At a meeting of the American Chemical Society in Anaheim, California, MIT Professor Dr. Daniel Nocera announced that a research team had achieved a long -sought-after for goal of artificially copying photosynthesis, the process by which plants turn sunlight into energy, to create electricity easily and cheaply.
  • Nature's hot green quantum computers revealed

    02/03/2010 4:47:15 PM PST · by neverdem · 20 replies · 571+ views
    New Scientist ^ | 03 February 2010 | Kate McAlpine
    WHILE physicists struggle to get quantum computers to function at cryogenic temperatures, other researchers are saying that humble algae and bacteria may have been performing quantum calculations at life-friendly temperatures for billions of years. The evidence comes from a study of how energy travels across the light-harvesting molecules involved in photosynthesis. The work has culminated this week in the extraordinary announcement that these molecules in a marine alga may exploit quantum processes at room temperature to transfer energy without loss. Physicists had previously ruled out quantum processes, arguing that they could not persist for long enough at such temperatures to...
  • Mmmm, Carbon!

    02/19/2009 9:45:52 AM PST · by neverdem · 9 replies · 368+ views
    ScienceNOW Daily News ^ | 18 February 2009 | Phil Berardelli
    Enlarge ImageThe good girth. Researchers measure the continuing growth--and carbon storage--of rainforest trees. Credit: Simon Lewis Some good news for those worried about climate change: The trees in African rainforests are gobbling up ever more carbon dioxide and thereby mitigating the buildup of the greenhouse gas in Earth's atmosphere. The finding underscores the importance of protecting the rainforests, say the authors. Trees take in CO2 as they grow, and when they die, their decay releases it back into the air. In theory, these fluxes are balanced in a mature forest, so the trees are neither a net sink--as the...
  • Origin of life questions, and what biblical creationists really believe

    02/07/2009 12:39:59 PM PST · by GodGunsGuts · 13 replies · 1,050+ views
    CMI ^ | February 7, 2009 | Jonathan Safarti, Ph.D.
    In reality, evolution has done nothing to help real science, and has actually hindered it in many ways...
  • Algae May Be an Energy Answer

    08/09/2008 6:52:41 AM PDT · by LomanBill · 102 replies · 172+ views
    The New American ^ | August 18, 2008 | Ed Hiserodt
    A modern society such as that in the United States requires personal transportation — cargo trucks, planes, and cars — to make a market economy work. Any serious effort to move our country to mass transportation, such as trains and buses, for everyone and everything all the time — or even most of the time — would destroy not only our economy, but the American way of life. To provide our personal transportation for the foreseeable future, the United States needs oil or an oil substitute.Electric vehicles, the proposed solution by many for America’s transportation problems, have serious drawbacks generally...
  • CO2 Science: The (Non-Threat) of Global Warming Against Coral Reefs

    10/10/2007 10:54:22 PM PDT · by Robert A. Cook, PE · 3 replies · 497+ views
    CO2 Science ^ | Volume 10, Number 34: 22 August 2007 | Sherwood, Keith and Craig Idso
    Following is a summary published on-line in CO2 Science website, refuting the exaggerated threat of global warming against the ocean's coral reefs. Supposedly, rising CO2 levels in the atmosphere will cause the CO2 to dissolve in the water, lowering the pH (causing it to turn from basic towards an acidic solution), thus dissolving/harming/killing/bleaching/destroying (depending on who is speaking) the wrold's coral reefs. ----------------- Marine Photosynthesis and Oceanic pH Volume 10, Number 34: 22 August 2007 -------------------------------------------------------------------------------- Based on four theoretical constructs - a geochemical model, an ocean general-circulation model, an IPCC CO2 emissions scenario for the 21st century, and a...
  • Shining light on the evolution of photosynthesis

    02/09/2006 7:25:43 PM PST · by DaveLoneRanger · 58 replies · 810+ views
    Answers in Genesis ^ | Wednesday, February 8, 2006 | Rick Swindell
    Biochemical sequences necessary for the evolution of photosynthesis would have required the evolution of a set of sophisticated enzymes that generated a series of useless intermediates. In the series of enzymes necessary for the manufacture of chlorophyll, these intermediates would have been lethal to the cell before the next enzyme in the series evolved to pick up and modify phototoxic material and insert it into apoproteins. Evidence is presented that: a) the appearance of ground state oxygen would have been lethal to the cell well before oxygen-disarming complexes evolved; b) probability would have eliminated any chance for the evolution of...
  • The Promise of Pond Scum Who needs oil or coal or gas when the world is full of plain old algae?

    10/17/2005 8:36:23 AM PDT · by Past Your Eyes · 6 replies · 682+ views
    Discover Magazine ^ | October 2005 | Michael Robbins
    A merica’s gluttonous demand for energy shows no signs of abating anytime soon. We burn through 20 million barrels of oil per day and are projected to use 28.3 million barrels per day by 2025. In order to meet that demand, Department of Energy analysts estimate that we’ll need to double the amount of oil we import. And that is just the appetizer. Spencer Abraham, who served as Secretary of Energy during President George W. Bush’s first term, has blithely predicted that America’s growing electric power needs can be met only if we build between 1,300 and 1,900 new power...
  • Grow in the Dark

    07/11/2005 8:31:12 AM PDT · by furball4paws · 25 replies · 543+ views
    ScienceNews ^ | June 25, 2005 | N. Moreira
    A group of microbiologist describe a new species of green-sulfur bacteria, that grow by photosynthesis at depths of 2500 meters. Since no sunlight penetrates to that depth, they show that these organisms use faint light emitted from deep sea hydrothermal vents. This light is similar to that produced when an electric burner heats up and glows red. The bacteria also thrive in low oxygen environments.