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  • guppies
  • image of nine mouse placentas
  • sugars on the outside of a cancer cell
Your search has returned 24226 articles:
  • News

    Female guppies with bigger brains pick more attractive guys

    When choosing more attractive guys, girl guppies with larger brains have an advantage over their smaller-brained counterparts. But there’s a cost to such brainpower, and that might help explain one of the persistent mysteries of sex appeal, researchers report March 22 in Science Advances.

    One sex often shows a strong preference for some trait in the other, whether it’s a longer fish fin...

    03/22/2017 - 15:54 Animals, Evolution, Neuroscience
  • Letters to the Editor

    Readers question supernova physics

    Supernova surprise

    Astronomers continue to learn a lot from supernova 1987A, which burst onto the scene 30 years ago. Thanks to new detectors that can pick up neutrino signals and even gravitational waves, scientists will be ready when the next nearby star explodes, Emily Conover reported in “Waiting for a supernova” (SN: 2/18/17, p. 24).

    Steve Capps wondered how neutrinos inside an...

    03/22/2017 - 12:10 Particle Physics, Robotics, Condensed Matter
  • Science Visualized

    Colorful pinwheel puts a new spin on mouse pregnancy

    View slideshow of other winners

    This rainbow pinwheel of mouse placentas isn’t just an eye-catching, award-winning image. The differences in color also provide researchers with new clues to how a mother’s immune system may affect her or her baby’s health during pregnancy. The work could lead to earlier diagnosis and treatment of preeclampsia, a common pregnancy complication. 

    ...

    03/22/2017 - 07:00 Animals, Immune Science, Science & Society
  • 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
  • News

    Genetic switch offers clue to why grasses are survival masters

    Grasses have top-notch border control to conserve water in their leaves. Now, scientists have identified the genetic switch that makes them such masters at taking in carbon dioxide without losing water. The find might eventually help scientists create more drought-resistant crop plants, the researchers report in the March 17 Science.  

    Adjustable pores called stomata on the undersides of...

    03/20/2017 - 15:35 Plants, Cells, Physiology
  • Science Visualized

    Under lasers, a feathered dino shows some skin

    What happens when you shoot lasers at a dinosaur fossil? Some chemicals preserved in the fossil glow, providing a nuanced portrait of the ancient creature’s bones, feathers and soft tissue such as skin.

    Soft tissue is rarely preserved in fossils, and when it is, it can be easily obscured. A technique called laser-stimulated fluorescence “excites the few skin atoms left in the matrix,...

    03/20/2017 - 14:40 Paleontology
  • Reviews & Previews

    Shocking stories tell tale of London Zoo’s founding

    The ZooIsobel CharmanPegasus$27.95

    When Tommy the chimpanzee first came to London’s zoo in the fall of 1835, he was dressed in an old white shirt.

    Keepers gave him a new frock and a sailor hat and set him up in a cozy spot in the kitchen to weather the winter. Visitors flocked to get a look at the little ape roaming around the keepers’ lodge, curled up in the cook’s lap or tugging...

    03/20/2017 - 07:00 Animals, History of Science
  • Reviews & Previews

    To understand rivers, let physics be your guide

    Where the River FlowsSean W. FlemingPrinceton Univ.$26.95

    Spend an hour wandering along a river and you may wonder why the water rushing by chose this particular path over any other. While many nature writers might offer philosophical musings on the subject, Where the River Flows author Sean Fleming has physics on his side.

    Physics isn’t the lens through which most people think...

    03/19/2017 - 08:00 Physics, Earth
  • 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
  • Introducing

    Detachable scales turn this gecko into an escape artist

    Large, detachable scales make a newly discovered species of gecko a tough catch. When a predator grabs hold, Madagascar’s Geckolepis megalepis strips down and slips away, looking more like slimy pink Silly Putty than a rugged lizard.

    All species of Geckolepis geckos have tear-off scales that regrow within a few weeks, but G. megalepis boasts the largest. Some of its scales reach nearly 6...

    03/17/2017 - 07:00 Animals