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  1. 19847

    In this article, the unusual head positions seem to indicate that these creatures died from a kind of nerve damage. One of the possibilities is oxygen deprivation. Doesn’t this suggest that most of these creatures probably died from suffocation after a sudden mud slide or other deluge? Ron McMurtryModesto, Calif. Suffocation from a mud slide, […]

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  2. Chemistry

    Beyond Ethanol: Synthetic fuel offers promising alternative

    A faster, simpler manufacturing technique could make a synthetic biofuel into an even stronger competitor to ethanol.

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  3. Materials Science

    Needling Cells: Stem cells could take their cues from silicon nanowires

    Scientists have grown mouse stem cells on a bed of silicon nano-needles, hoping that they will be able to guide the cells' development through electrical stimulation.