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  1. Follicle Size Matters: Hormone regimen may reduce pregnancy success

    Hormone injections used to induce livestock and women to ovulate could force eggs to leave ovarian follicles before they are fully mature and thereby jeopardize pregnancy outcomes.

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  2. Physics

    Pinstripe Electricity: Novel fuel cell relies on thin, aqueous streams

    A promising new type of fuel cell exploits microstreams of water, which behave like flows of gooey honey.

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  3. Earth

    Hit Again: December temblor probably caused new Sumatran quakes

    Seismic activity that rattled the Indonesian region early this week, including a quake that measured a whopping magnitude 8.7, was triggered by December's massive tsunami-spawning earthquake, scientists suggest.