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  1. Health & Medicine

    Human tests of experimental Ebola vaccine set to start

    NIH and NIAID have announced that human tests of an experimental vaccine against Ebola virus will begin in early September.

    By Nathan Seppa
  2. Health & Medicine

    To grow new knee cartilage, look to the nose

    Cartilage-making cells from the nose grew into patches that successfully replaced damaged or missing cartilage in the knees of goats and of humans.

    By Nathan Seppa
  3. Astronomy

    Wake of nearby supernova hints at explosion’s origins

    Gamma rays from radioactive decay of cobalt formed in a nearby supernova reveal unprecedented details of the explosion’s aftermath.

    By Christopher Crockett
  4. Quantum Physics

    Blind quantum camera snaps photos of Schrödinger’s cat

    Quantum weirdness lets physicists snap photo without collecting incoming light from cardboard cat subject.