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  1. Earth

    Rare blue diamonds are born deep in Earth’s mantle

    Rare blue diamonds are among the deepest ever found, and hint at possible pathways for recycling of ocean crust in the mantle.

    By Carolyn Gramling
  2. Particle Physics

    In a first, physicists accelerate atoms in the Large Hadron Collider

    Ionized lead atoms took a spin around the world’s biggest particle accelerator.

    By Emily Conover
  3. Astronomy

    How the Parker probe was built to survive close encounters with the sun

    Scientists had to get creative in testing the technology for the Parker Solar Probe, using huge mirrors, dust tunnels and even reams of paper.

    By Lisa Grossman
  4. Neuroscience

    Soccer headers may hurt women’s brains more than men’s

    Women sustain more damage from heading soccer balls than men, a brain scan study suggests.