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    Body + BrainBody & Brain

    Gene Drives, Big Yawns, and Birth Control: Week in Review

    ByAllison EckNOVA NextNOVA Next

    This Week’s NOVA Next Feature

    With the power to modify entire populations, gene drives promise to upend evolution—or not. NOVA Next contributor Veronique Greenwood reports the story .

    Here, a mosquito with a gene drive (blue) mates with a mosquito without one (grey). In the offspring, one chromosome will have the drive. The endonuclease then slices into the drive-free DNA. When the strand gets repaired, the cell's machinery uses the drive chromosome as a template, unwittingly copying the drive into the break.

    What We’re Reading

    • Some experts believe that we’ve reached the upper limit of human longevity . [The New York Times]
    • Botswana, home to 130,000 wild elephants, has announced its support of a permanent ban on ivory trading . [National Geographic]
    • Psychologist Amy Cuddy’s research on power posing is coming under attack. She responded to her critics here . [Science of Us]
    • Our surrounding area of stars, gas, and dust—called the Local Arm—is actually about 20,000 light-years long . That’s four times bigger than we thought. [National Geographic]

    Did you miss "Great Human Odyssey" this week? You can watch it streaming online here.

    Image credits: Steve Dixon/Feng Zhang/MIT, Esvelt et al 2014 (CC BY)

    Funding for NOVA Next is provided in part by the Eleanor and Howard Morgan Family Foundation.

    Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.