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E.g., 07/29/2015
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  • August 8, 2015

    07/29/2015 - 15:29
  • Editor's Note

    Encountering an unexpected Pluto and life's complexity

    By her own estimate, Susan Milius has considered writing about the downfall of biological kingdoms for some 10 years. That long contemplation made it somewhat difficult to pare all the material down to a...

    07/29/2015 - 15:27 Evolution, Planetary Science
  • Letters to the Editor

    Global warming unpaused, how space affects the brain and more reader feedback

    Space travel vs. the brain

    Getting to Mars may leave a mark on astronauts’ minds. In “Trip to Mars could damage brain cells” (SN...

    07/29/2015 - 15:27 Neuroscience, Climate, Cells
  • Feature

    The tree of life gets a makeover

    The tree of life might seem like a stable design, appropriate for indelible ink. Plenty of people think so. An Internet search for “phylogenetic tattoos” turns up some showy skin art.

    But the branches are shifting. Since a radial diagram based on 1990s genetics inspired a rush for tree-of-life tattoos, technical diagrams of life’s ancestral connections have been redrawn. And the...

    07/29/2015 - 15:00 Evolution, Microbes, Genetics
  • Scicurious

    How trans fats oozed into our diet and out again

    On June 16 the Food and Drug Administration made the final call: Trans fats are no longer “generally recognized as safe” for use in food. That means that food manufacturers have three years to ooze these cheap and useful fats out of their processed foods.

    In fact, most of them already have. Trans fat —a...

    07/29/2015 - 14:24 Nutrition, Science & Society
  • News

    Resveratrol’s anticancer benefits show up in low doses

    Less can be more.

    Low doses of resveratrol, a chemical found in red grapes and some other foods, were better than higher ones at stimulating cancer-fighting processes, researchers report July 29 in Science Translational Medicine. Mice with a genetic predisposition for colon cancer also developed...

    07/29/2015 - 14:00 Biomedicine, Cancer, Physiology
  • First

    Distant star has northern lights–like display

    Shimmering auroras are common over the poles of Earth and have been spotted around other planets. Now astronomers have seen an aurora of a star about 18 light-years away. A northern lights–like display, the first seen on a star, dances over a faint orb named LSR J1835 + 3259, researchers report in the July 30 Nature....

    07/29/2015 - 13:00 Astronomy
  • News

    Remains of Jamestown leaders discovered

    View the video

    In an answer to archaeologists’ prayers, excavations at the site of the first English church in what is now the United States have cast light on the lives and deaths of four key players at Virginia’s Jamestown colony more than 400 years ago.

    Archaeologists discovered the site of the church, which was used from 1608 to 1617 and hosted Pocahontas’...

    07/28/2015 - 18:36 Anthropology, Archaeology
  • Feature

    Brain activity in unconscious patients offers new views of awareness

    The average brain weighs about 1.3 kilograms and consumes 20 percent of the body’s energy budget. Much of that energy powers the brain’s 86 billion nerve cells, or neurons, which conduct tiny electrical currents that can travel close to 120 meters per second. A typical neuron transmits its signals to about 7,000 neighboring cells and to cells beyond. These neurons assemble into structures...

    07/28/2015 - 17:47 Neuroscience
  • Science Visualized

    Encased algae create kaleidoscope of color

    Under a microscope, carefully arranged diatoms form a dazzling display.

    Diatoms are single-celled algae (in the stramenopile supergroup) that live in sunny, wet habitats. The organisms come in many shapes and sport natural pigments of green, gold and brown. To complete their look, diatoms extract silica, a mineral used in glass, from the water and erect intricate outer skeletons. The...

    07/28/2015 - 17:14 Ecology, Oceans