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Your search has returned 23 articles:
  • Feature

    Getting creative to cut methane from cows

    View the video

    In a pasture outside Edmonton, Canada, you’ll find a few dozen cows doing what cows do: mostly eating. The average animal spends eight-plus hours a day filling its belly, or as is the case with cows, bellies. Along with that enormous appetite, cows are born with the ability to digest almost any plant they can chew, thanks to a multichambered stomach and a helpful army of...

    11/18/2015 - 16:36 Animals, Microbes, Climate
  • Scicurious

    There’s more than one way to persuade people to vaccinate

    Measles used to sound like such an old-fashioned disease. But the current Disneyland measles outbreak has put it back in the news, with 141 cases reported so far this year in 17 states and the District of Columbia. While the outbreak has some parents who formerly delayed or refused to vaccinate racing to the clinic, others are becoming more entrenched in their belief that vaccination is both...

    02/19/2015 - 16:14 Health
  • Science & the Public

    Airports’ leaden fallout may taint some kids

    People who live near airports serving small planes are exposed to lead from aviation fuel. A new study now links an airport’s proximity to slightly elevated blood-lead levels in children from area homes.

    Small planes (known in the trade as general aviation) tend to run on gasoline, most of which contains lead as an octane booster. These aircraft — used as taxis, personal aircraft and...

    07/14/2011 - 16:55 Technology, Humans & Society, Earth & Environment
  • Feature

    Breaking it Down

    Suppose there was a fourth little pig. This one was a physicist. Unlike his brother the engineer, who built a house out of tried-and-true bricks, the physicist pig chose a building material by doing calculations based on fundamental principles. He settled on a substance made from silicon and oxygen, an abundant material with high bond strength and the aesthetic bonus of transparency. It was...

    01/29/2010 - 14:02
  • News

    Nobel Prize in chemistry commends finding and use of green fluorescent protein

    Making cells glow with a protein borrowed from jellyfish is one of the brightest ideas in chemistry. At least that is what the RoyalSwedishAcademy of Sciences implied when it announced October 8 that the 2008 Nobel Prize in chemistry would be awarded to three scientists who were instrumental in discovering green fluorescent protein, commonly called GFP, and developing the protein as a...

    10/08/2009 - 06:20 Chemistry, Other, Genes & Cells
  • News

    Feather-covered dinosaur fossils found

    BRISTOL, England — A newly described, profusely feathered dinosaur may give lift to scientists’ understanding of bird and flight evolution, researchers report. The lithe creature, which stood about 28 centimeters tall at the hip, is the oldest known to have sported feathers and is estimated to be between 1 million and 11 million years older than Archaeopteryx, the first known bird.

    ...

    09/25/2009 - 14:00 Paleontology, Life & Evolution
  • Feature

    Danger in the Air

    On Dec. 15, 1989, KLM flight 867 from Amsterdam was approaching its destination in Anchorage, Alaska, when the plane flew into what appeared to be a thin layer of normal clouds. Suddenly, according to flight-crew reports, it got very dark outside and the air in the cockpit filled with a brownish dust and the unmistakable smell of sulfur. One minute after beginning a high-power climb to escape...

    09/08/2009 - 10:14 Earth
  • News

    More problems with Hubble

    Two anomalies onboard the orbiting Hubble Space Telescope, which stopped transmitting data on September 27, caused engineers to suspend re-activation of Hubble’s science equipment. Engineers encountered problems following an intricate maneuver to circumvent a piece of failed hardware. Hubble is currently orbiting Earth in a dormant “safe mode” while the malfunctions are assessed.

    In an...

    10/17/2008 - 16:49 Atom & Cosmos
  • News

    Largest known prime number found

    Editor’s note: This story was originally posted on Science News online as a Math Trek column September 20.

    Here’s a number to savor: 243,112,609-1.

    Its size is mind-boggling. With nearly 13 million digits, it makes the number of atoms in the known universe seem negligible, a mere 80 digits.

    And its form is tidy and lovely: 2n-1.

    But its true beauty is...

    09/28/2008 - 10:39
  • Math Trek

    Largest known prime number found

    Here’s a number to savor: 243,112,609-1.

    Its size is mind-boggling. With nearly 13 million digits, it makes the number of atoms in the known universe seem negligible, a mere 80 digits.

    And its form is tidy and lovely: 2n-1.

    But its true beauty is far grander: It is a prime number. Indeed, it is the largest prime number ever found.

    The Great Internet...

    09/20/2008 - 11:06 Numbers