By Subject - Technology

  • A new iron age?
    A new iron age?

    Smelters refine aluminum ore, but not iron ore, with electricity. A new electrolytic process for refining iron ore could save vast amounts of greenhouse gases.


    Thursday, May 9th, 2013
  • Neutrinos
    Neutrinos

    Synopsis: To view neutrinos from distant explosions, astrophysicists have set up thousands of detectors in pure ice at the South Pole. What are neutrinos, and what do these scientists hope to learning from them? Find the article: Chasing Neutrinos at the South Pole Illustration: The Why Files IceCube sees both cosmic rays and neutrinos from [...]


    Wednesday, January 9th, 2013
  • The science of cheese
    The science of cheese

    Cheesemaking is older than Homer’s Odyssey, but questions remain. Which bacteria make the best cheese? Must low-fat cheese taste like cardboard? Why is small-producer, “artisan” cheese becoming so popular? Why does one cheese taste different than another.


    Thursday, October 18th, 2012
  • When dead men speak…
    When dead men speak…

    British archeologists unearthed bones of Richard III, who died in 1485 after a murderous reign. How do bones, isotopes, historic records, DNA and grave goods tell us about the dead?


    Thursday, October 4th, 2012
  • Wave power
    Wave power

    The first ocean wave energy-capturing device with a permit to connect back to a public power grid will enter the Pacific next month. How much power could the U.S. potentially harness from the waves crashing into its the coastline? According to researchers, wave energy might be one of our best renewable resources.


    Thursday, September 20th, 2012
  • Fracking
    Fracking

    Classroom Activity Page: Hydraulic fracturing, or fracking, is a high-pressure technique for cracking rocks and allowing natural gas to reach wells. Amid a boom in U.S. natural gas production, industry promises that fracking will bring Americans jobs and low-cost energy for decades. Opponents warn that the drilling-and-fracking process threatens to pollute air, surface water, and most importantly, groundwater. Will these concerns stymie an ongoing boom in natural gas production? Should they?


    Tuesday, June 26th, 2012
  • Mock meat: Fit for grilling?
    Mock meat: Fit for grilling?

    As a new conversion of soy protein into a meat-like material reaches the market, we also look into meat grown, cell by cell, in lab dishes. Could in vitro meat be in your future, and would that solve ethical, health and environmental problems?


    Thursday, June 21st, 2012
  • Mourning the dying weather satellites
    Mourning the dying weather satellites

    We love accurate weather forecasts, but the weather satellites they rely on are nearing the boneyard. Some replacements have crashed into the ocean, others are in financial limbo. Be very worried about our fragile planet: these satellites also track climate, ice, fire, and the health of forests and ocean!


    Thursday, June 7th, 2012
  • Rennaissance man wonders: Denial of science, science of denial ... Why do so many doubt evolution, warming?
    Denial of science, science of denial Tobacco and cancer. CFCs and ozone. Vaccines and autism. And evolution through natural selection, acid rain and global warming. Why do the facts get lost in a cacophony of argument, falsehood and outright denial? A conference looks at why the media get taken for a ride, and how they can improve.
    Thursday, May 3rd, 2012
  • Patent wars!
    Patent wars!

    How do patents work? What is “new, non-obvious and useful”? What will happen after the biggest change in patent law in 60 years?


    Thursday, April 19th, 2012
  • Farming, Native American style
    Farming, Native American style

    Native agriculture could be a sophisticated response to a challenging environment. What were the secrets of permaculture, companion cropping and corn farming? Could these techniques contribute to modern farming?


    Thursday, April 5th, 2012
  • Should “wastewater” be wasted?
    Should “wastewater” be wasted?

    Population growth, climate change and development are all focusing attention on water shortages. Theoretically, water can be recycled forever, but can we possibly clean sewage to make it drinkable? Yes, and a number of projects around the country are doing exactly that. Bottoms up!


    Thursday, February 23rd, 2012
  • Calendars: A fix needed?
    Calendars: A fix needed?

    New Year’s approaches. A “permanent” calendar could finally answer the annual, “Uh, what day is New Year’s eve this year?” question. This calendar would place each date on a specific day every year, and simplify life for schedulers. But would a permanent calendar be accepted?


    Thursday, February 16th, 2012
  • Dr. Darwin teaches robot!
    Dr. Darwin teaches robot!

    A crash course in “sink or swim” teaches computerized robots to adapt to changing circumstances. When taught by “directed evolution,” robots that started without legs learned to walk sooner than robots that started with legs! Can you explain?


    Thursday, January 5th, 2012
  • Feeding 7+ billion
    Feeding 7+ billion

    The green revolution fed billions, but population keeps rising, water is short and the climate is changing. How will Africans feed themselves despite poor soil and widespread poverty? Could small projects that fit the environment and culture make farmers an engine of prosperity and a big source of food?


    Thursday, November 10th, 2011


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