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Your search has returned 3295 articles:
  • 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
  • What sent Hawaii's mountain chain east?

    A Pacific Ocean chain of islands and underwater mountains — including the Hawaiian Islands — has a distinctive bend. Scientists have puzzled for years about what might have caused the curve. A new analysis now blames it on the disappearance of a tectonic plate. Long ago, this plate slid into Earth’s interior.Explainer: Understanding plate tectonicsTectonic plates are the huge moving slabs of rock...
    07:00 AM, April 13, 2015 Earth
    Readability Score: 7.2
  • There really was a Brontosaurus, study claims

    For more than 100 years, paleontologists have dismissed Brontosaurus as little more than a mislabeled Apatosaurus. It now appears they were wrong. And that could mean the big, plodding Jurassic dinosaur will get its old name back.The original fossil specimen was given its name — meaning “thunder lizard” — in 1879. But in 1903, other scientists decided its bones looked a lot like those of an...
    07:00 AM, April 12, 2015 Dinosaurs & Fossils
    Readability Score: 8.9
  • Tiny plastic, big problem

    Plastic bottles lying in the gutter. Grocery bags tangled in branches. Food wrappers scuttling across the ground on a windy day. Although such examples of litter easily come to mind, they only hint at the serious and growing problem of plastic pollution — a problem mostly hidden from view.The problem with plastics is they do not easily degrade. They may break down, but only into smaller pieces....
    07:15 AM, April 10, 2015 Environment & Pollution
    Readability Score: 6.5

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