Vol. 174 No. #9
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More Stories from the October 25, 2008 issue

  1. Health & Medicine

    This is the brain on age

    The activity of genes in men's brains begins to change sooner than it does in women's brains, a new study shows.

  2. Space

    Lowdown on the sun

    The current solar minimum is the lowest — and one of the longest — recorded in the past 50 years, since modern measurements began.

  3. Health & Medicine

    Window of opportunity for stroke treatment widens

    Use of clot-busting drugs as long as 4½ hours after an event pays dividends later.

  4. Life

    Safer creation of stem cells

    A new technique for converting adult cells to stem cells avoids dangerous mutations in cell DNA

  5. Life

    X chromosome is extra diverse

    Men who father children with multiple women are responsible for “extra” diversity on the X chromosome, a new study of six different populations suggests.

  6. Space

    Galaxies on the move

    Scientists discover "dark flow" -- the unexplained streaming of galactic clusters across the universe.

  7. Life

    Curtain drops after ants’ final act

    A handful of ants remain outside to close the colony door at sunset and sacrifice their lives in the act.

  8. Paleontology

    Forget bird-brained

    Scientists have uncovered a new dinosaur that breathed like a bird.

  9. Planetary Science

    Water’s role in Martian chemistry becoming clearer

    As mission nears end, Phoenix Mars Lander finds strong evidence for minerals similar to those formed on Earth by liquid water.

  10. Life

    Old fish, new fish, red fish, blue fish

    A difference in vision in cichlids in Lake Victoria could be pushing a species to split into two.

  11. Health & Medicine

    Don’t forget diet composition

    Caloric restriction, an antiaging technique, fails to lower levels of IGF-1, a growth factor that, in high amounts, is linked to cancer in humans. But cutting protein along with calories does decrease IGF-1.

  12. Physics

    Diamonds engage at the nano scale

    Manipulating the quantum properties of diamond impurities makes diamond into a kind of microscope that could, for example, reveal the inner working of cells.

  13. Life

    Bicoastal Atlantic bluefin tuna

    Mediterranean and western Atlantic bluefin tuna spend more time in mixed groups than previously thought, suggesting management strategies need to be revisited.

  14. Physics

    Charging up fuel injection

    A new device uses an electric field to increase cars’ gas mileage.

  15. Health & Medicine

    Nobel Prize in medicine given for HIV, HPV discoveries

    Three Europeans recognized for linking viruses to AIDS, cervical cancer.

  16. Physics

    Nobel Prize in physics shared for work that unifies forces of nature

    Understanding of broken symmetry has been crucial to the standard model of particle physics.

  17. Chemistry

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

    One researcher is awarded for discovering the protein that helps jellyfish glow and two for making the protein into a crucial tool for biologists.

  18. Climate

    Cooling climate ‘consensus’ of 1970s never was

    Myth often cited by global warming skeptics debunked.

  19. U.S. must invest in technologies to avoid energy crisis

    Steven Chu, director of Lawrence Berkeley National Laboratory and a Nobel laureate in physics, has advocated for energy thrift. During a September visit to Washington, D.C., he spoke with senior editor Janet Raloff about how he believes the United States can tackle what he sees as a looming energy crisis. You’ve said the United States […]

  20. Astronomy

    Ultramassive: as big as it gets

    A black hole can consume anything in its path. These monsters can become huge — but perhaps only so huge.

  21. Health & Medicine

    Body In Mind

    Long thought the province of the abstract, cognition may actually evolve as physical experiences and actions ignite mental life.