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Your search has returned 3298 articles:
  • Eureka! Lab

    Scientists Say: Hormone

     Hormone  (noun, “HOR-moan”)This is a type of chemical that the body uses to send a signal from one body part to another. A hormone might be made in the brain, released into the blood and travel to some distant organ, such as the kidney. At its target, this chemical will usually trigger some effect. The tissues that make hormones are part of the endocrine system. Hormones send signals that help...
    08:00 AM, April 20, 2015
    Readability Score: 7.0
  • Movies may tempt teens to drink

    More than four in ten British 15-year-olds say their drinking is interfering with their life. But not all teens face the same alcohol risks, a new study finds. Those who see more drinking in movies are more likely to drink a lot themselves.The finding comes from a long-term study in the United Kingdom called the Avon Longitudinal Study of Parents and Children. Thousands of pregnant women joined...
    07:00 AM, April 20, 2015 Body & Health, Brain & Behavior
    Readability Score: 6.9
  • Deep-sea fish show signs of exposure to pollution

    Far below the ocean's surface is a dark, mysterious world. There, it’s too deep for the sun's rays to penetrate. Very few people have seen this world. Even fewer have studied the health of its inhabitants — oddly named fish such as the greater forkbeard, black scabbardfish and orange roughy.Though hidden, these strange creatures still are part of our world. After all, people eat these and other...
    07:00 AM, April 19, 2015 Environment & Pollution, Animals
    Readability Score: 7.8
  • Ditching farm pollution — literally

    A ditch shrouded in snow may look serene. But soon it will begin funneling potentially toxic pollution from nearby farm fields into nearby lakes and streams. Scientists are now looking to reshape those ditches to keep farm chemicals and soils where they’ll do the most good: on the farm.Farmers often construct ditches along natural drainage paths. These channels carry away excess rain that might...
    07:15 AM, April 17, 2015 Agriculture, Environment & Pollution
    Readability Score: 6.9
  • QUESTIONS for Ditching Farm Pollution

    SCIENCEBefore reading1.    When you think of a ditch, what do you see? What does it look like? What function, if any, does it have?2.    Farmers use a lot of chemicals to help crops grow and to keep livestock well. How do farmers keep these agricultural chemicals from polluting the environment next to the farm?During reading1.    Where do farmers tend to build the ditches on their land?2.    What...
    07:00 AM, April 17, 2015 Classroom Questions
  • News Brief: Brrrrr — that’s really cold!

    For a brief time, a swarm of atoms in Palo Alto, Calif., become the coldest stuff on Earth. Physicists in a Stanford University lab, there, brought them down to a super-frigid 50 trillionths of a kelvin. How cold is that? Well, on the kelvin scale, zero equals “absolute zero.” That’s simply as cold as anything can get. And in the new tests, the atoms almost got that cold. For comparison, the...
    07:00 AM, April 16, 2015 Physics
    Readability Score: 7.4
  • News Brief: Wash removes nano germ-killers

    DENVER, Colo. — Manufacturers often coat fabrics with nano-sized particles of silver. It’s not to add bling. That precious metal can kill the bacteria that make sweaty gym socks stinky. In hospitals, that silver can make fabrics toxic to disease-causing germs. And that’s why traces of nanosilver now coat everything from athletic wear to hospital gowns. But giving these fabrics a deep clean may...
    07:00 AM, April 15, 2015 Chemistry
    Readability Score: 7.7
  • Mini-sats: The trick to spying Earth-bound asteroids?

    Go tiny or go home. That’s one suggestion for building telescopes to find a city-smashing asteroid before it finds us. Asteroids are space rocks, which can range from boulder sized up to chunks of rock nearly 1,000 kilometers (621 miles across). Most of them orbit between Mars and Jupiter. A fleet of pint-sized satellites orbiting the sun could track down the majority of asteroids that threaten...
    07:00 AM, April 14, 2015 Space, Planets
    Readability Score: 7.9
  • Eureka! Lab

    Making a microbe subway map

    It was summer in the city. During the long, hot afternoons, high school scientists darted in and out of New York City’s subway stations. At each one, they pulled out cotton swabs and carefully swiped surfaces. They took samples from subway seats, poles, doors, turnstiles, ticket machines — even garbage cans. The students then put each in a plastic container and labeled it. Afterward, they raced...
    07:00 AM, April 14, 2015
    Readability Score: 7.6
  • Eureka! Lab

    Scientists Say: Microplastic

    Microplastic  (noun, “MY-krow-PLAS-tik”)Small pieces of plastic that are less than 5 millimeters (or 0.2 inch) in size. That’s about half the size of a typical grain of rice.  Plastics — materials made from long strings of repeating molecules — are often cheap to make. But they can degrade very slowly once they’ve been discarded. Sometimes, they can break down into microplastics. Other times,...
    08:00 AM, April 13, 2015
    Readability Score: 7.2

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