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GreenMonk news roundup 12/20/2008

  • New climate change scenarios quantify the idea that oil is only a small component of the total global warming problem — the real problem is coal.

    If the world replaced all of its oil usage with carbon-neutral energy sources, ecologist Kenneth Caldeira of Stanford University calculated that it would only buy us about 10 years before coal emissions warmed the planet to what many scientists consider dangerous levels.

    tags: coal, oil, global warming, coal burning

  • Launch of the Water Footprint Network: 16 December 2008!
    Download press release

    People use lots of water for drinking, cooking and washing, but even more for producing things such as food, paper, cotton clothes, etc. The water footprint is an indicator of water use that looks at both direct and indirect water use of a consumer or producer. The water footprint of an individual, community or business is defined as the total volume of freshwater that is used to produce the goods and services consumed by the individual or community or produced by the business.

    tags: water, water footprint

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GreenMonk news roundup 12/19/2008

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GreenMonk news roundup 12/17/2008

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GreenMonk news roundup 12/16/2008

  • Climate talks in Poznan, Poland, this week included a meeting to discuss the concept of a super-grid that would connect renewable-rich regions to energy-hungry regions via high-voltage, direct-current (HVDC) cables. It’s an attractive idea. If Iceland has all the geothermal, North Africa has the solar, Scotland has the offshore wind and the coasts can tap wave power, why not build a grid that can carry that emission-free power to inland population centres that rely on fossil fuels and nuclear?

    tags: supergrid, hvdc

  • The thickness of Arctic sea ice “plummeted” last winter, thinning by as much as one-fifth in some regions, satellite data has revealed.

    A study by UK researchers showed that the ice thickness had been fairly constant for the previous five winters.

    The team from University College London added that the results provided the first definitive proof that the overall volume of Arctic ice was decreasing.

    tags: arctic ice, arctic thaw, arctic sea ice

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GreenMonk news roundup 12/15/2008

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GreenMonk news roundup 12/13/2008

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GreenMonk news roundup 12/12/2008

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GreenMonk news roundup 12/11/2008

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GreenMonk news roundup 12/10/2008

  • As the west’s appetite for meat increases, so too does the demand for soya – used as animal feed by farmers. But the planting of huge tracts of land is causing deforestation and destroying eco-systems in developing countries.

    tags: soya, deforestation, paraguay, sustainable farming

  • Ever since last week’s announcement of a deal to roll out Project Better Place’s model for recharging electric cars in Hawaii, I’ve been curious about how it would work out, if the supplies of new renewable electricity needed to wean the Islands’ million or so cars and light trucks off of oil were not forthcoming, or at least didn’t materialize as quickly as the company and state hope. If I’ve done my sums right this morning, it appears that electrifying Hawaii’s passenger cars would still save large quantities of oil and reduce greenhouse gas emissions significantly, even if every kilowatt-hour (kWh) to run them was generated from the state’s oil-fired power plants.

    tags: better place, ev, phev, electric vehicle, hawaii

  • Researchers are reporting they have successfully made a high quality biodiesel from spent coffee grounds. They estimate that the coffee ground biodiesel industry could generate as much as $8,000,000 in profits annually using waste from US Starbucks stores alone.

    tags: biodiesel, biofuel

  • The ice that has covered the Arctic basin for a million years will be gone in little more than six years because of global warming, a University of Manitoba geoscientist said.

    tags: ice, arctic thaw, arctic ice

  • With political efforts to tackle global warming advancing slower than a Greenland glacier, schemes for saving Earth’s climate system that once were dismissed as crazy or dangerous are gaining in status.
    Negotiating a multilateral treaty on curbing greenhouse gases is being so outstripped by the scale of the problem that those promoting a deus ex-machina — a technical fix that would at least gain time — are getting a serious hearing.

    To the outsider, these ideas to manipulate the climate may look as if they are inspired by science fiction.

    tags: geo-engineering, climate change

  • Research on nuclear fusion continues apace…

    MIT researchers are keeping hope alive in the long quest for fusion energy. Researchers have advanced our ability to harnesses one of the most complicated forms of energy science in the universe, but add a word of caution that real scalable reactors could still be ‘decades away’ as all eyes now focus on the ITER in France.

    tags: fusion, nuclear fusion, nuclear power

  • Battery technologies are improving every day!

    Charge capacities could be increased substantially over those of carbon-based anodes.

    Silicon nanowires have been investigated as alternatives to the graphite heretofore widely used as an anode material in rechargeable lithium-ion power cells. The theoretical specific charge capacity of graphite, corresponding to the maximum Li content (at a composition of LiC6) is 372 mA•hr/g. In contrast, the theoretical specific charge capacity of Si corresponding to the maximum Li content (at a composition of Li4.4Si) is much greater — 4.2 A•hr/g.

    tags: lithium, lithium ion, nanowires

  • Looks like oil isn’t going to go away any time soon without a fight!

    The huge run-up in oil prices over the last several years, reaching a peak of close to US $150 per barrel this past summer, has given energy companies a big incentive to find new ways of harvesting unconventional oil, especially in North America.

    tags: oil shale, oil

Posted from Diigo. The rest of my favorite links are here.