Earth

  1. Earth

    Methane even escapes from freezing permafrost

    An extended field season reveals that the autumn freeze in the arctic squeezes methane from some high-latitude wetland soils, a match even for summertime methane release.

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  2. Earth

    Toxicologist to Become an NIH Director

    A new director — equal parts scientist and communicator — will take over environmental-health agency.

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  3. Earth

    Unveiling hidden craters

    Earth is regularly bombarded by small meteorites, but most of the resulting craters are hard to find. A team reports finding one such crater in the forests of west-central Alberta.

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  4. Chemistry

    Nanosilver disinfects — but at what price?

    Silver demonstrates some unusual immunological impacts at the nanoscale.

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  5. Earth

    Marine pollution spawns ‘wonky babies’

    Featured blog: Pollutants at sea can slow critters' sperm or induce DNA damage.

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  6. Earth

    Plate tectonics got an early start

    The chemistry of minerals preserved in Australian rocks suggests tectonic activity for Earth’s earliest eon.

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  7. Earth

    Antidepressants make for sad fish

    Fish may suffer substantially from even brief encounters with antidepressants, which wastewater releases into river water.

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  8. Paleontology

    Bacteria may play big role in forming fossils

    Bacteria can build a biofilm that preserves a tissue's structure.

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  9. Humans

    Is Your Fish Oil Polluted?

    Clues to gauging the likely purity of fish-oil capsules.

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  10. Humans

    When Not to Flush

    Toilets are not where we should be disposing of unwanted medicines.

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  11. Earth

    Antidepressants Aren’t for Fish

    Antidepressants can play potentially dangerous mind games with fish.

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  12. Humans

    What an Acid Bath!

    One fallout of space shuttle launches can be a transient change in water pH.

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