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Your search has returned 3315 articles:
  • Nanosilver: Naughty or nice?

    Silver is beautiful — and a killer. The shiny white metal is a natural antibiotic. That means it kills bacteria. People have recognized this benefit since ancient times. Wealthy Romans ate using knives, forks and spoons made of silver. They understood that silver helped keep spoiled food from making them sick. In fact, historians think that is how we came to call eating utensils "silverware."...
    07:15 AM, August 28, 2015 Pollution, Chemistry, Body & Health
    Readability Score: 8.0
  • Questions for ‘Nanosilver: Naughty or nice?’

    To accompany feature  ‘Nanosilver: Naughty or nice?’SCIENCEBefore reading:1.   Scientists, engineers, artisans and health professionals can all silver for different purposes. Name three types of applications for which they might rely on silver. During reading:1.    What are some of the biological qualities of silver?2.    How did the Romans likely learn about silver’s antibiotic effect?3.    In...
    07:00 AM, August 28, 2015 Classroom Questions
  • Doing Science

    Broadcom MASTERS alum fights national crisis at summer camp

    Fighting national crises and diagnosing critically ill patients- all in a summer's work for Broadcom MASTERS 2014 finalist Daniel Bruce. Daniel, a California resident, was nominated for Broadcom MASTERS twice. Seizing the opportunity, he applied the first year and received recognition as a semifinalist. One year later, he applied again-- his persistence paid off, and in October 2014 Daniel joined...
    09:13 AM, August 27, 2015
  • Beliefs about global warming vary by country

    Where you live can have a big effect on what you believe about global warming and other aspects of climate change. That’s the finding of a new study.In 2007 and 2008, a Gallup World Poll surveyed people in 119 countries. That survey covered a range of issues. A group of scientists has now analyzed how people had responded to two of the questions: How much do you know about global warming, and how...
    07:00 AM, August 27, 2015 Weather & Climate
    Readability Score: 8.1
  • DNA: Our ancient ancestors had lots more

    The DNA of our human ancestors looked very different almost 2 million years ago, before they migrated out of Africa. That’s the conclusion of a new study. It mapped a range of differences, or diversity, in the human genome. This genome is the complete DNA instruction book present in nearly every human cell.DNA is a long ladder-like molecule. Each of its rungs consists of two chemicals called...
    07:00 AM, August 26, 2015 Body & Health, Genetics, Food & Nutrition
    Readability Score: 7.5
  • Can house dust make us fat?

    Dust bunnies that breed under furniture may be bad news for waistlines, a new study suggests. But it’s far too early to add dusting to a weight-loss plan.Dietary fats and other materials that make up indoor dust can send a signal to human fat cells, telling them to grow.That process, in turn, might slow the body’s metabolism, which is the rate at which it burns energy. Such changes could add to...
    07:00 AM, August 25, 2015 Pollution, Body & Health
    Readability Score: 7.9
  • Eureka! Lab

    Oops. Correcting scientific errors

    Did you hear there were bacteria that could cause bubonic plague and anthrax on the New York City subway? Many media outlets reported that scientists swabbed the subway and found genes from the bacteria that cause these deadly diseases.It now appears those scientists were wrong.There probably were no deadly germs on the subway — certainly none that riders need to worry about. The scientists who...
    07:00 AM, August 25, 2015
    Readability Score: 7.7
  • Eureka! Lab

    Scientists Say: Social

    Social (adjective, “SOSH-uhl”)The inherent preference, in some organisms, to seek out others and dwell with or near to them. Animals and people can be social. People may interact by reaching out to each other on “social media.” Animals may groom each other as a comforting form of social contact. Some people may even suffer social anxiety when they are around others or fear that they might be...
    07:00 AM, August 24, 2015
    Readability Score: 7.3
  • Top rooster announces the dawn

    Cock-a-doodle-don’t?  A new study finds that roosters low in the pecking order of a small group won’t sound off until the top ranked male first crows his morning cock-a-doodle-doo’s.In the chicken world, the top-ranked bird in a social group gets first dibs — a chance to peck up food and other resources. Lower-ranking birds in this pecking order must wait their turn to eat. A study now finds that...
    07:00 AM, August 24, 2015 Animals
    Readability Score: 7.9
  • Organic food starts to prove its worth

    At the supermarket, there are usually two sections in the produce aisle. In one, all the fruits and vegetables, from apples to zucchini, are labeled “organic.” Often these products cost more than ones that look the same but don’t have the organic label.The big price tag can lead people to assume organic food is better than conventionally grown food. But, in the United States, the label simply...
    07:15 AM, August 21, 2015 Environment & Pollution, Food & Nutrition
    Readability Score: 8.0

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