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  1. Tech

    Leak Locator: Ultrasound for finding holes in spacecraft

    Researchers have devised a way to pinpoint leaks in spacecraft by listening to ultrasound waves traveling through the ship's hull.

    By David Shiga
  2. Earth

    Breeding Parasites Along with Fish: Do sea lice from salmon farms spread far?

    Marine parasites known as sea lice spread readily from farmed salmon to passing wild fish, according to a controversial study conducted in British Columbia.

    By Ben Harder

  3. 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.