1. Climate

    Kyoto climate treaty’s greenhouse ‘success’

    There are 33 days until the opening of formal negotiations in Copenhagen on the next global climate-protection treaty. The hoped-for accord would take up where the current treaty leaves off. But to get some perspective on just where that is, a new United Nations report describes for negotiators and the public just how much the Kyoto Protocol has achieved. And real strides have been made in slowing the growth of greenhouse-gas emissions, thanks to many European nations (albeit with little help from North American ones or Japan).

  2. Climate

    Mount Kilimanjaro could soon be bald

    The world-renowned ice caps could disappear by 2022, new research suggests.

  3. Chemistry

    Aerosols cloud the climate picture

    A NASA model incorporates how atmospheric aerosols and greenhouse gases interact, yielding better estimates of the gases' warming and cooling effects.

  4. Climate

    Winter forecast: Sustained blizzard of climate news

    At least in our area of the country, consumers are already being assaulted — well before Halloween — with Christmas music, decorations and holiday-themed goods. Reporters are smack in the throes of their own early seasonal blitz: News items carrying a climate or global-warming theme. And I don’t expect the crush of climate news and seminars to diminish until around Christmas. That’s when the next United Nations COP — or Conference of the Parties — will end this year’s pivotal round of negotiations in Copenhagen aimed at producing a new climate treaty.

  5. Climate

    Carbon emissions: Trend improves, but …

    Sometimes what’s bad for the economy can be good for the planet. Or so argued Lester Brown, president of Earth Policy Institute, yesterday. This environmental trend spotter pointed to several developments that may have escaped our attention as the global economy alternately sputtered and entered periods of freefall throughout the past 18 months. Trend one: U.S. emissions of carbon dioxide, a leading greenhouse gas, have taken a tumble.

  6. Climate

    Giant snakes warming to U.S. climes

    Some were pets whose bodies and appetites apparently got too big for their owners to support. Most are probably descendants of released pets. Today, thousands of really big non-native snakes — we’re talking boa constrictors, anacondas and pythons — slither wild in southern Florida. And there’s nothing holding them in the Sunshine State. Which is why a report that was released today contends they pose moderate to high ecological threats to states on three U.S. coasts. Indeed, the homelands of these snakes share climatic features with large portions of the United States — territory currently inhabited by some 120 million Americans. Based on comparisons of the temperatures, rainfall and land cover found in the snakes’ native range, it’s possible that these slithering behemoths could stake claims to territory as far north as coastal Delaware and Oregon.

  7. Ecosystems

    As climate shifts, birds follow

    Most of the birds in California’s Sierra Nevada range are on the move in response to recent climate changes.

  8. Earth

    Unusual advances

    New glacier model helps explain how ice masses can grow even in a generally warming climate.

  9. Earth

    Cash for clunkers II: Appliances

    States could soon roll out programs that help consumers replace energy hogging home appliances.

  10. Earth

    A source of haze

    Scientists identify how a hydrocarbon commonly emitted by plants is converted to light-scattering aerosols.

  11. Science & Society

    News of science: Choose wisely

    As the 'news' industry evolves, consumers who value quality science journalism may need to become ever more discriminating.

  12. Ecosystems

    Churning the numbers

    Some of the ocean’s small swimmers may be having a big impact on ocean mixing.