Earth

  1. Health & Medicine

    Nonstick toxicity

    By mimicking the action of estrogen, a widely used nonstick chemical promotes cancer development in animals.

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  2. Chemistry

    Help the Climate: Empty the Fridge

    Yesterday, I reported that in hopes of slowing down global warming, some nations were interested in strengthening the Montreal Protocol – a United Nations treaty to curb releases of chemicals that endanger stratospheric ozone. But I didn’t really get into what they had up their sleeves. It turns out they want signatory nations to eliminate […]

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  3. Climate

    When Is a Consensus on Climate Not a Consensus?

    A protein chemist reported he had assembled a list of more than 30,000 scientists who challenge the idea that human releases of greenhouse gases are warming Earth's climate.

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  4. Chemistry

    Freon’s Cool Link to Climate

    Quick: What’s the name of the big UN global climate treaty? If you said the Kyoto Protocol – you’d be wrong. Because it’s a trick question. Although the Kyoto Protocol is indeed the treaty developed to address the issue of arresting global warming and the climate perturbations that will be spawned by such a growing […]

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  5. Earth

    Eddies in the deep Earth

    The flow of molten material in our planet's outer core is the prime source of Earth's magnetic field. Localized blips in the magnetic field suggest this flow can fluctuate rapidly over large areas.

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  6. Earth

    Froggie Needs a Name – and Help

    To help raise awareness about the plight of frogs and toads, which are disappearing globally, Amphibian Ark is selling formal naming rights to an unusual frog.

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  7. Climate

    Boreal forests shift north

    As forests move northward and to higher elevations, they alter ecosystems and threaten to further heat the Arctic's already warming climate.

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  8. Animals

    Polar bears listed

    Polar bear declared "threatened," but Secretary limits decision's impact.

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  9. Earth

    Climate clues in ice

    A kilometers-long ice core from Antarctica has been recording climate information for the past 800,000 years and has revealed a three millennia–long period when carbon dioxide levels in the air were lower than any previously measured.

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  10. Life

    Just ain’t natural

    Monster data crunch strengthens case that climate is disrupted.

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  11. Health & Medicine

    Pollution and blood clots

    Inhaling tiny pollution particles, even at concentrations allowed in urban air, appears to increase the risk that an individual’s veins will develop potentially lethal blood clots.

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  12. Earth

    Emissions head north

    When it comes to Arctic air, various regions of the Northern Hemisphere are equal opportunity polluters. Even some subtropical countries in southern Asia get into the act.

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