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E.g., 11/14/2018
E.g., 11/14/2018
Your search has returned 671 images:
  • mammoth, mastodon, and gomphothere
  • a dust satellite
  • Sierpinski triangle and quantum fractal
Your search has returned 12835 articles:
  • Feature

    How mammoths competed with other animals and lost

    The Gray Fossil Site, a sinkhole in northeastern Tennessee, is full of prehistoric treasures. Between 7 million and 4.5 million years ago, rhinoceroses, saber-toothed cats and other creatures, even red pandas, perished here by the edge of a pond. But that bounty of fossils pales next to the site’s biggest find: a mastodon’s skeleton, nearly 5 million years old, preserved in exquisite detail...

    11/13/2018 - 12:30 Ecosystems, Archaeology, Paleontology
  • Introducing

    One of Earth’s shimmering dust clouds has been spotted at last

    Meet the Kordylewski dust clouds, shimmering pseudo-satellites that orbit Earth near the moon. A team of Hungarian astronomers say they have spotted light scattered from one of these clouds, providing evidence that the clouds really exist after nearly 60 years of controversy.

    The twin dust clouds gather at two of the points in space where the gravity of Earth and the moon cancel each...

    11/13/2018 - 06:00 Astronomy, Planetary Science
  • News in Brief

    Physicists wrangled electrons into a quantum fractal

    Physicists have created an oddity known as a quantum fractal, a structure that could reveal new and strange types of electron behaviors.

    Fractals are patterns that repeat themselves on different length scales:  Zoom in and the structure looks the same as it does from afar. They’re common in the natural world. For instance, a cauliflower stalk looks like a miniature version of the full...

    11/12/2018 - 11:00 Quantum Physics, Condensed Matter
  • News

    China is about to visit uncharted territory on the moon

    China is about to make space history. In December, the country will launch the first spacecraft ever to land on the farside of the moon. Another craft, slated for takeoff in 2019, will be the first to bring lunar rocks back to Earth since 1976.

    These two missions — the latest in China’s lunar exploration series named after the Chinese moon goddess, Chang’e — are at the forefront of...

    11/11/2018 - 07:00 Planetary Science
  • News

    A potent fish oil drug may protect high-risk patients against heart attacks

    Cholesterol-lowering drugs may one day gain a sidekick in the battle against heart disease. Taking a potent drug derived from fish oil along with a statin lowers the risk of heart attack and stroke in some high-risk people, researchers report.

    A clinical trial called REDUCE-IT tested the approach in more than 8,000 participants who either had cardiovascular disease or were at high risk...

    11/10/2018 - 15:00 Health, Clinical Trials
  • News

    Vitamin D supplements don’t prevent heart disease or cancer

    CHICAGO — Taking a vitamin D supplement does not reduce the risk of having a potentially fatal heart attack or stroke or for getting an invasive cancer, according to highly anticipated results of a large clinical trial.

    The VITAL trial found no significant difference in cancer or heart health risk between people taking 2,000 international units, or IU, of vitamin D a day and those who...

    11/10/2018 - 15:00 Health, Clinical Trials
  • News

    Hints of Oort clouds around other stars may lurk in the universe’s first light

    A thick sphere of icy debris known as the Oort cloud shrouds the solar system. Other star systems may harbor similar icy reservoirs, and those clouds may be visible in the universe’s oldest light, researchers report.

    Astronomer Eric Baxter of the University of Pennsylvania and colleagues looked for evidence of such exo-Oort clouds in maps of the cosmic microwave background, the cool...

    11/09/2018 - 06:00 Planetary Science, Exoplanets, Cosmology
  • News

    These fragile, futuristic batteries run longer with a little oil

    Batteries that use aluminum and oxygen normally live fast and die young. But a new design could help these high-energy devices endure.

    Aluminum-air batteries are promising candidates for a new generation of non-rechargeable batteries, because they’re super lightweight and compact. The batteries, however, aren’t widely used because their internal components quickly degrade each other. In...

    11/08/2018 - 14:00 Chemistry, Technology
  • News

    How a life-threatening allergic reaction can happen so fast

    Within minutes of biting into peanut-tainted food, people with a peanut allergy may find their pulse quickening, blood pressure plummeting and throat closing up. They’re experiencing a rapid and sometimes fatal allergic reaction called anaphylaxis.

    New research in mice explains how even a small amount of an allergen can quickly trigger such a strong, full-body reaction. The culprit is a...

    11/08/2018 - 14:00 Immune Science, Health
  • News in Brief

    The number of calories you burn while resting depends on the time of day

    Timing is everything. Even how many calories a person burns while at rest depends on the hour.

    People burn about 129 more calories when resting in the afternoon and evening than in the early morning. But morning is better for burning carbohydrates, while fats are more likely to be burned in the evening, researchers report November 8 in Current Biology. The findings add to evidence that...

    11/08/2018 - 11:00 Physiology