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  • SHARK PROPELLERS
    The denticles of the bonnethead shark (Sphyrna tiburo), shown here, are about 100 microns in diameter, the thickness of a piece of printer paper. The teethlike structures give sharks extra thrust in the water, a new study shows.

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  • Large ships like the one shown here emit low-frequency sounds that may stress out right whales living near busy commercial shipping lanes.

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  • Emblems of Awareness
    The source of human consciousness remains elusive, but the latest brain studies offer new insights. Full story

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    Found in: Body & Brain
  • GJ 667Cc (second from left) is the latest addition to a list of life-friendly exoplanets. This lineup depicts the four best bets for exo-incubators so far, compared to Earth (far left) and Mars (far right). Full Story

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Special Report: Consciousness
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Marketing for Scientists: How to Shine in Tough Times by Marc J. Kuchner
In tough economic times, this guide helps scientists communicate their research more effectively to ...
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New England Wild Flower Society's Flora Novae Angliae: A Manual for the Identification of Native and Naturalized Higher Vascular Plants of New England by Arthur Haines
The New England Wild Flower Society provides a comprehensive guide to the identification of the reg...
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