Dan Wasserman by Dan Wasserman

Dan Wasserman

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  1. dtroutma

    dtroutma GoComics PRO Member said, about 1 year ago

    A little reading on what’s happening to critical aquifers, rivers, and water sources as a result of climate change (ask Texans) is a result of, but a more obvious element of that CO2 change, as is the acidification of the oceans, and death of coral reefs critical to fish production. But no worry, people can eat those biofuels being made from that corn being grown that isn’t actually edible, right?

  2. Rad-ish

    Rad-ish GoComics PRO Member said, about 1 year ago

    Humanity today, collectively, must face the uncomfortable fact that industrial civilization
    itself has become the principal driver of global climate. If we stay our present course, using
    fossil fuels to feed a growing appetite for energy-intensive life styles, we will soon leave the
    climate of the Holocene, the world of prior human history. The eventual response to doubling
    pre-industrial atmospheric CO2 likely would be a nearly ice-free planet, preceded by a period of
    chaotic change with continually changing shorelines.
    Humanity’s task of moderating human-caused global climate change is urgent. Ocean and
    ice sheet inertias provide a buffer delaying full response by centuries, but there is a danger that
    human-made forcings could drive the climate system beyond tipping points such that change
    proceeds out of our control. The time available to reduce the human-made forcing is uncertain,
    because models of the global system and critical components such as ice sheets are inadequate.
    However, climate response time is surely less than the atmospheric lifetime of the human-caused
    perturbation of CO2. Thus remaining fossil fuel reserves should not be exploited without a plan
    for retrieval and disposal of resulting atmospheric CO2.
    Paleoclimate evidence and ongoing global changes imply that today’s CO2, about 385 ppm,
    is already too high to maintain the climate to which humanity, wildlife, and the rest of the
    biosphere are adapted. Realization that we must reduce the current CO2 amount has a bright
    side: effects that had begun to seem inevitable, including impacts of ocean acidification, loss of
    fresh water supplies, and shifting of climatic zones, may be averted by the necessity of finding an
    energy course beyond fossil fuels sooner than would otherwise have occurred.
    We suggest an initial objective of reducing atmospheric CO2 to 350 ppm, with the target to
    be adjusted as scientific understanding and empirical evidence of climate effects accumulate.
    Although a case already could be made that the eventual target probably needs to be lower, the
    350 ppm target is sufficient to qualitatively change the discussion and drive fundamental changes
    in energy policy. Limited opportunities for reduction of non-CO2 human-caused forcings are
    important to pursue but do not alter the initial 350 ppm CO2 target. This target must be pursued
    on a timescale of decades, as paleoclimate and ongoing changes, and the ocean response time,
    suggest that it would be foolhardy to allow CO2 to stay in the dangerous zone for centuries.
    .
    http://arxiv.org/ftp/arxiv/papers/0804/0804.1126.pdf

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