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Your search has returned 1383 articles:
  • Editor's Note

    Expert eavesdroppers occasionally catch a break

    In July of 1972, NASA launched the first Landsat satellite into orbit around Earth. Since then, the spacecraft and its successors have transformed our understanding of Antarctica (and the rest of the planet, too). In the first year following the launch, Landsat’s images of the faraway continent showed “uncharted mountain ranges, vast ice movements and errors in maps as little as two years old...

    07/26/2017 - 13:15 Earth, Science & Society
  • Science Ticker

    This robot grows like a plant

    View the video

    Robots are branching out. A new prototype soft robot takes inspiration from plants by growing to explore its environment.

    Vines and some fungi extend from their tips to explore their surroundings. Elliot Hawkes of the University of California in Santa Barbara and his colleagues designed a bot that works on similar principles. Its mechanical body sits inside a plastic...

    07/19/2017 - 17:26 Robotics, Plants
  • News

    Protein in Parkinson’s provokes the immune system

    Bits of a protein that builds up in Parkinson’s disease trigger the immune system, causing it to tag them as foreign invaders.

    In a blood test, immune cells called T cells became activated when exposed to the protein in about 40 percent of Parkinson’s patients in a new study. This autoimmune response may contribute to the progression of the disease, the researchers report online June 21...

    06/21/2017 - 13:25 Biomedicine, Health, Immune Science
  • News

    Ancient DNA shakes up the elephant family tree

    Fossil DNA may be rewriting the history of elephant evolution.

    The first genetic analysis of DNA from fossils of straight-tusked elephants reveals that the extinct animals most closely resembled modern African forest elephants. This suggests that straight-tusked elephants were part of the African, not Asian, elephant lineage, scientists report online June 6 in eLife.

    Straight-...

    06/13/2017 - 15:08 Evolution, Genetics, Animals
  • News

    How a flamingo balances on one leg

    A question flamingo researchers get asked all the time — why the birds stand on one leg — may need rethinking. The bigger puzzle may be why flamingos bother standing on two.

    Balance aids built into the birds’ basic anatomy allow for a one-legged stance that demands little muscular effort, tests find. This stance is so exquisitely stable that a bird sways less to keep itself upright when...

    05/23/2017 - 19:59 Biophysics, Animals
  • It's Alive

    Blennies have a lot of fang for such little fishes

    After a recent flurry of news that fang blennies mix an opioid in their venom, a question lingers: What do they need with fangs anyway? Most eat wimpy stuff that hardly justifies whopper canines.

    Not that fang blennies are meek fishes.

    “When they bite, they bite savagely,” says Bryan Fry of the University of Queensland in Brisbane, Australia. “If these little jobbies were 3 meters...

    05/16/2017 - 10:00 Animals, Evolution
  • Feature

    Jumping genes play a big role in what makes us human

    Face-to-face, a human and a chimpanzee are easy to tell apart. The two species share a common primate ancestor, but over millions of years, their characteristics have morphed into easily distinguishable features. Chimps developed prominent brow ridges, flat noses, low-crowned heads and protruding muzzles. Human noses jut from relatively flat faces under high-domed crowns.

    Those facial...

    05/16/2017 - 07:00 Genetics, Human Evolution, Molecular Evolution
  • Feature

    Cancer cells cast a sweet spell on the immune system

    Shrink yourself small enough to swoop over the surface of a human cell, and you might be reminded of Earth’s terrain. Fats, or lipids, stay close to the surface, like grasses and shrubs. Proteins stand above the shrubs, as mighty oaks or palm trees. But before you could distinguish the low-lying lipids from the towering proteins, you’d see something else adorning these molecules — sugars.

    ...
    03/21/2017 - 12:00 Cancer, Immune Science
  • Feature

    Smartphones may be changing the way we think

    Not too long ago, the internet was stationary. Most often, we’d browse the Web from a desktop computer in our living room or office. If we were feeling really adventurous, maybe we’d cart our laptop to a coffee shop. Looking back, those days seem quaint.

    Today, the internet moves through our lives with us. We hunt Pokémon as we shuffle down the sidewalk. We text at red lights. We tweet...

    03/17/2017 - 12:21 Neuroscience, Health
  • Feature

    When a nearby star goes supernova, scientists will be ready

    Almost every night that the constellation Orion is visible, physicist Mark Vagins steps outside to peer at a reddish star at the right shoulder of the mythical figure. “You can see the color of Betelgeuse with the naked eye. It’s very striking, this red, red star,” he says. “It may not be in my lifetime, but one of these days, that star is going to explode.”

    With a radius about 900 times...

    02/08/2017 - 08:00 Astronomy, Physics