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  • Predatory dinos were truly big-mouths

    Many dinosaurs are known for their fearsome teeth. Allosaurus had sharp, bladelike choppers. Many were 5 to 10 centimeters (2 to 4 inches) long. Tyrannosaurus rex had bigger ones — the size of bananas. Big teeth are a plus for a predator. But unless a creature can open its mouth very wide, long teeth might actually be a good recipe for starvation. Many big-toothed species survived for millions of...
    07:00 AM, November 25, 2015 Dinosaurs & Fossils
    Readability Score: 7.3
  • Concerns about Earth’s fever

    During the first two weeks of December, the United Nations is holding a major meeting in Paris, France. Delegates from 196 nations will be trying to put together a treaty — a set of binding laws — aimed at slowing the rise in Earth’s surface temperatures. Here is a rundown of the issues that will be driving those negotiations. If you are 10 years old, you have lived through at least five of the...
    07:15 AM, November 24, 2015 Weather & Climate, Earth, Sustainability
    Readability Score: 7.4
  • Questions for ‘Concerns over Earth’s fever’

    To accompany feature ‘Concerns over Earth’s fever’SCIENCEBefore reading:1.    Look up the definitions for “weather” and “climate.” How are these two different? Is there anything similar about them?2.    Excess carbon dioxide ends up in the atmosphere from the burning of oil and gas to drive cars, to heat and cool buildings and to run factories. Consider your normal day, one in which you go to...
    07:00 AM, November 24, 2015 Classroom Questions
  • Explainer: How scientists know Earth is warming

    Temperatures on Earth can soar above 40° Celsius (104° Fahrenheit) and drop well below 0 °C (32 °F). Despite that variability, scientists can calculate a global average. Countries around the world have had reliable weather monitoring stations on land and sea since about 1880. In the 1960s, researchers also began taking the Earth's temperature with the help of satellites. Satellites don't measure...
    07:00 AM, November 24, 2015 Weather & Climate, Earth
  • Eureka! Lab

    Scientists Say: Osmosis

    Osmosis (noun, “Oz-MO-sis”)The movement of a solution across a membrane — a barrier that blocks the flow of some, but not all, materials. The liquid in the solution will move from the side with fewer dissolved molecules toward the side with more. Movement will continue until the concentrations on both sides of the membrane are the same. Think of a solution low in water and high in salt next to a...
    07:00 AM, November 23, 2015
    Readability Score: 8.9
  • Some 3-D printing can leave toxic taint

    Today, it seems that three-dimensional, or 3-D, printers are everywhere. People use them in labs, schools —even at home. Anyone can draw an object using a computer program and then print it out of plastic. But some newly printed plastics may emerge with traces of dangerous chemicals, a new study finds. The good news: There also appears to be a cure for the problem.Shirin Oskui is a bioengineer at...
    07:00 AM, November 23, 2015 Chemistry, Environment & Pollution, Technology & Engineering
    Readability Score: 7.1
  • Profile: A human touch for animals

    Temple Grandin, 68, is one of the world’s top experts on nurturing farm animals. She trains farmers and ranchers to raise livestock without causing them pain or fear. Those methods and insights make their care — called animal husbandry — faster and easier because the animals do not become anxious.Grandin also has designed slaughterhouses, facilities where animals are killed for food. Animals move...
    07:00 AM, November 20, 2015 Agriculture, Animals, STEM Careers, Brain & Behavior
    Readability Score: 6.5
  • Doing Science

    I #Give2Science: Francisca Vasconcelos

    I #Give2science by creating an app to make quantum physics easily accessible for people of all scientific backgrounds.- Francisca Vasconcelos, Intel ISEF 2015 finalistSSP is compiling photographs of how members of our community give back to science, whether that’s by teaching, doing research, performing experiments, inventing new things, participating in or supporting science fairs, mentoring...
    03:45 AM, November 20, 2015
  • Eureka! Lab

    Flaming rainbows: Pretty, but dangerous

    Students walking into a science class at W.T. Woodson High School in Fairfax, Va., on October 30 thought they were going to see a fun, fiery demonstration. But instead of awe-inspiring chemistry, five got whisked to the hospital for burns on their faces, heads and arms.The culprit? A demonstration called the “flame rainbow.”Teachers start by placing a set of bowls containing metal salts across a...
    07:00 AM, November 19, 2015
    Readability Score: 6.7
  • Study equates sleepless nights with high-fat diet

    A good night’s sleep does more than help you feel rested. It also may help prevent insulin resistance, a condition that underlies most diabetes. That’s the conclusion of a new study by researchers at Cedars-Sinai Medical Center in Los Angeles, Calif.Scientists had known that lack of sleep inhibits the body’s ability to use glucose. This sugar powers our cells. But the new study finds that low...
    07:00 AM, November 19, 2015 Body & Health
    Readability Score: 7.3

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