All Stories

  1. Physics

    Interacting with Physics

    Drag an electric charge to see how it affects a nearby water molecule. Fool around with a laser to cool an atom. The University of Colorado’s Physics 2000 Web site relies heavily on interactive animations to demonstrate important concepts and discoveries in modern physics. Topics range from X rays and CAT scans to the quantum […]

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  2. Health & Medicine

    Gene expression helps classify cancers

    Using gene chips to study the activity of thousands of genes simultaneously, researchers showed that a common cancer of white blood cells—diffuse large B-cell lymphoma—is in fact two distinct diseases.

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  3. 19144

    Why am I not surprised that the pH of lung moisture decreases during an asthma attack? Poor ventilation of the alveoli would retain carbon dioxide, which is carbonic acid in solution. Does the change in pH correspond to a buildup of carbonate or bicarbonate in the blood? Would it be a better measure of an […]

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  4. Health & Medicine

    Antacids for asthma sufferers?

    People with asthma have more acidic lungs than do people who don't have the disease, a finding that may prompt the development of novel asthma treatments aimed at restoring the normal pH value of the lungs.

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  5. Health & Medicine

    Treating one disease caused another

    Egypt's public health service inadvertently spread hepatitis C while treating patients for schistosomiasis, a common parasitic disease, with injections of antischistomal medications.

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  6. One-gene change makes mice neurotic

    Researchers have engineered a strain of stressed-out mice by knocking out one gene.

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  7. Good guys and bad guys share tactics

    A microbial odd couple—the brucellosis pathogen and a nitrogen-fixer for plants—need the same gene to settle into their hosts long-term.

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  8. Health & Medicine

    From rabies virus to anti-HIV vaccine

    Researchers working with mice are trying to fashion an HIV vaccine by using a weakened rabies virus to bring an HIV glycoprotein to the attention of the immune system.

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  9. Astronomy

    Black holes and their galaxies: A closer link

    Supermassive black holes and the galaxies they inhabit appear to grow up together.

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  10. Planetary Science

    Rocks on the ice

    Pristine fragments of a meteorite that fell January 18 in the frozen Yukon and that remained frozen until they were delivered to a NASA laboratory may reveal much about the earliest days of the solar system.

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  11. Anthropology

    Lucy on the ground with knuckles

    Some early human ancestors appear to have walked on all fours using their knuckles, much as chimpanzees do.

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  12. Anthropology

    Goat busters track domestication

    People began to manage herds of wild goats at least 10,000 years ago in western Iran.

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