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  • Handguns at a gun show in Las Vegas
Your search has returned 12 articles:
  • Feature

    Gun research faces roadblocks and a dearth of data

    Buying a handgun in Connecticut means waiting — lots of waiting. First comes an eight-hour safety course. Then picking up an application at a local police department. Review of the application (which includes a background check and fingerprinting) can take up to eight weeks. If approved, the state issues a temporary permit, which the buyer trades in at state police headquarters for a permanent...

    05/03/2016 - 15:00 Science & Society, Mental Health, Health
  • Feature

    Deep network

    Gas bubbles effervesce from a mound of muck on the seafloor in a deep submarine canyon off the west coast of Canada. Microbes beneath the sediment belch the bubbles after feasting on the ancient remains of algae, sea critters and their poop: a primordial stew that’s been simmering since long before humans walked the Earth.

    This gassy oasis attracts an odd collection of critters. Worms...

    10/04/2013 - 15:00 Earth, Technology
  • Feature

    The 3-D Printing Revolution

    Joshua Pearce takes unusual satisfaction in strolling through Walmart. The shelves laden with toys, household items, tools and clothing inspire in him a certain smugness, a pride in American entrepreneurship. But it’s not because Pearce admires the chain as an empire built by a self-made man. Pearce swells with pride at Walmart because the store is full of mass-manufactured objects that he...

    02/20/2013 - 23:31 Technology, Computing
  • Science & the Public

    De-papering environmental summits

    This week, the United Nations hosted a major conclave in Rio de Janeiro — the 2012 Conference on Sustainable Development. Widely referred to as Rio+20, its timing commemorated the 20th anniversary of the so-called Earth Summit in this Brazilian capital. As one token — but highly visible — gesture toward sustainability, the new event encouraged all attendees to shrink their paper footprints....

    06/22/2012 - 11:38 Humans & Society, Earth & Environment
  • Feature

    Death of a Continent, Birth of an Ocean

    To those who live there, east Africa’s Afar region is “the place the devil plows.” One of the hottest and lowest areas on Earth, it is a landscape of baking desert and barren lava flows. To scientists, though, Afar means something more promising: geology in the raw.

    There, on the edge of Africa, the continent is splitting apart. Pulled inexorably by the...

    06/17/2011 - 10:30 Earth & Environment
  • News

    Reviving the taste of an Iron Age beer

    Early Celtic rulers of a community in what’s now southwestern Germany liked to party, staging elaborate feasts in a ceremonial center. The business side of their revelries was located in a nearby brewery capable of turning out large quantities of a beer with a dark, smoky, slightly sour taste, new evidence suggests.

    Six specially constructed ditches previously excavated at...

    01/14/2011 - 16:39 Humans & Society, Archaeology
  • 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
  • Feature

    Science News of the Year 2005

    Science News of Yesteryear

    Anthropology & Archaeology

    Astronomy

    Behavior

    Biomedicine

    Botany & Zoology

    Cell & Molecular Biology

    Chemistry

    ...
    12/20/2005 - 03:53 Humans & Society
  • Feature

    Electronic Jetsam

    Twice each day at more than 1,100 sites around the world, scientists simultaneously loft weather balloons to collect data about Earth's atmosphere. During each balloon's ascent, which lasts a couple of hours or so, instruments garner information about air temperature, humidity, barometric pressure, wind speed, and wind direction. Meteorologists feed all of these data into their computer...

    01/27/2003 - 13:58 Earth