News

  1. Life

    A gene therapy shot might keep cats from getting pregnant without being spayed

    Even after mating with fertile males, females given the cat contraceptive, which targets an ovulation-preventing hormone, did not get pregnant.

    By Erin Garcia de Jesús
  2. Anthropology

    Homo naledi may have dug cave graves and carved marks into cave walls

    Proposed discoveries of humanlike activities by these ancient, small-brained hominids have elicited skepticism from some researchers.

    By Bruce Bower
  3. Life

    Air pollution monitoring may accidentally help scientists track biodiversity

    Filters in air monitoring facilities inadvertently capture environmental DNA, which could give scientists a new tool to track local plants and animals.

    By Erin Garcia de Jesús
  4. Math

    A ‘vampire einstein’ tile outdoes mathematicians’ latest feat

    A newfound shape covers an infinite plane with a pattern that doesn’t repeat and without mirror images of the shape.