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  1. Space

    NASA’s OSIRIS-REx has returned bits of the asteroid Bennu to Earth

    Asteroid dirt from Bennu could help reveal clues about the material that came together to make the solar system — and possibly where life comes from.

    By James R. Riordon
  2. Health & Medicine

    Mouth taping may be a trending sleep hack, but the science behind it is slim

    Mouth taping is big on social media, but few studies have evaluated it. Some evidence suggests that sealing the lips shut may help people with sleep apnea.

    By Meghan Rosen
  3. Health & Medicine

    How brain implants are treating depression

    This six-part series follows people whose lives have been changed by an experimental treatment called deep brain stimulation.