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New Understanding Of Why Brain Cells Die After Stroke

December 31, 2003

Scientists have found a major mechanism that causes brain cells to die from stroke: when brain cells are deprived of oxygen and vital nutrients, as happens to parts of the brain affected by a stroke, a special channel on the surface of those brain cells is activated, triggering a lethal chain reaction.

The “TRPM7″ channel, when activated causes brain cells to produce large quantities of free radicals — toxic… read more

“Consensus” on Man-Made Warming Shattering

July 23, 2008

Physics & Society, The journal of the American Physical Society, has published “Climate Sensitivity Revisited,” a debate.

“There is a considerable presence within the scientific community of people who do not agree with the IPCC conclusion that anthropogenic CO2 emissions are very probably likely to be primarily responsible for the global warming that has occurred since the Industrial Revolution,” the paper notes.

“Global mean surface temperature… read more

Over 500 Million Mobile Broadband Users by 2010

November 29, 2006

Strategy Analytics has forecast 500 million mobile broadband users globally by 2010.

“We’re not likely to see technologies like mobile WiMAX or indeed, anything else, really take off until the next decade,” comments Sara Harris, Senior Industry Analyst at Strategy Analytics and author of this report. “However, HSPA and EV-DO will be more than acceptable for most users, giving them the speed and flexibility they want to use their… read more

The universe is a quantum computer

March 23, 2010

In Decoding Reality, physicist Vlatko Vedral argues that we should regard the entire universe as a gigantic quantum computer, as MIT scientist Seth Lloyd has suggested in a series of papers and his 2006 book, Programming the Universe.

‘Super-TB’ Created by Scientists

January 13, 2004

A virulent form of tuberculosis was created in a laboratory by experts trying to alter its genetic structure. They disabled the collection of genes thought to give TB some of its virulence and expected to find a weakened form of TB as a result. Instead, the organism grew in virulence.

Tidal Power Comes to Market

July 29, 2008

The world’s first commercial tidal-power system has been connected to the National Grid in Northern Ireland.

The 1.2-megawatt SeaGen system consists of two submerged turbines that are harvesting energy from tidal currents.

Growing a rudimentary liver from stem cells

A mixture of three cell types self-assembles into a liver bud that can be seen with the naked eye
July 4, 2013

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In work that will raise hope that organs could be repaired or even grown from scratch using a patient’s own tissue as the raw material, Japanese researchers have created functioning liver tissue from stem cells and successfully transplanted them into mice, MIT Technology Review reports.

The researchers found that a mixture of human liver precursor cells and two other cell types can spontaneously form three-dimensional structures dubbed… read more

Study Detects Recent Instance of Human Evolution

December 11, 2006

A surprisingly recent instance of human evolution has been detected among the peoples of East Africa. It is the ability to digest lactose, the principal sugar of milk, in adulthood, conferred by genetic changes that occurred as recently as 3,000 years ago, a team of geneticists has found.

Simpler, smarter consumer-electronics interfaces

January 10, 2012

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Several products that eliminate remote controls and other awkward interfaces are being shown at the Consumer Electronics Show this week, or are in the labs.

read more

A people’s view of Mars (images)

April 2, 2010

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NASA has released some of the shots that resulted when it handed over command of the HiRise camera aboard NASA’s Mars Reconnaissance Orbiter and let the general public choose its Martian targets.

Breakthrough! Ten major medical advances you’re likely to see in the coming year

January 26, 2004

Medical breakthroughs expected in 2004:

  • New, faster CT machines that can take clear pictures of a beating heart without a catheter, sedation or hospitalization, combined with MRI to show blood vessels, blood flow, scar tissue and the workings of the heart muscle and valves plus plaque buildup.
  • International efforts to regulate food marketing, pricing and production to prevent obesity.
  • 24-hour blood-pressure recording to diagnose
  • read more

    Toyota tests Segway-like stand-up-and-ride machine

    August 4, 2008

    Toyota has developed the “Winglet,” a motorized stand-up-and-ride Segway lookalike designed to help people scoot around at malls and airports.

    The Winglet goes up to 3.7 mph, about the same speed as pedestrians. Toyota envisions a future in which the Winglet will have wireless technology so it relays shopping information at stores. Or it might recharge its batteries itself, or come pick you up when you beckon it, toting… read more

    Maintaining Moore’s Law without Silicon

    December 20, 2006

    At the International Electron Device meeting in San Francisco last week, MIT scientists presented research that revealed a possible silicon-free future for electronics. The team showed that a transistor made of a compound semiconductor called indium gallium arsenide could operate more than two times faster than a silicon transistor of the same size. The findings could keep Moore’s Law alive after silicon has reached its limit.

    Harnessing the Web and supercomputers to track pathogens as they evolve

    April 13, 2010

    The new web-based Supramap application maps genetic mutations of pathogens like those among the different strains of avian influenza onto the globe, and could predict where a disease might logically emerge next.

    Things fall apart

    February 10, 2004

    Some people think modern astronomy’s convoluted theory of “dark matter” and “dark energy” is based on a kludge similar to Ptolemy’s theory of epicycles. If something else is actually causing those effects, the whole theoretical edifice would come crashing down.

    According to a paper just published in the Monthly Notices of the Royal Astronomical Society, irregularities in the cosmic microwave background may have been misinterpreted. They may have been… read more

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