Vol. 161 No. #26
Archive Issues Modal Example

More Stories from the June 29, 2002 issue

  1. Paleontology

    Rain Forest Primeval? Colorado fossils show unexpected diversity

    The size, shape, and riotous variety of fossil leaves unearthed at a site in central Colorado suggest that the region may have been covered with one of the world's first tropical rain forests just 1.4 million years after the demise of the dinosaurs.

  2. Health & Medicine

    Rewiring Job: Drug spurs nerve growth in stroke-damaged brains

    The natural compound inosine spurs nerve reconnection in rats that have suffered the loss of blood to parts of the brain, suggesting inosine might help people recover from a stroke.

  3. Health & Medicine

    Kill or Be Killed: Tumor protein offs patrolling immune cells

    Many human cancers may evade surveillance by exploiting a protein normally found on certain immune cells.

  4. Animals

    Wasp Painting: Do insects know each other’s faces?

    A researcher who dabbed tiny stripes on the faces and abdomens of paper wasps says that she's found the first evidence that the insects can recognize individuals by their markings.

  5. Health & Medicine

    Cell-Phone Buzz: Contradictory studies heat up radiation question

    A new long-term animal study of cell-phone radiation suggests that emissions don't cause cancer, but studies by a second team hint that cell phones may cause damage in other ways.

  6. Tech

    Putting squish into artificial organs

    Artificial organs and tissues may someday feel more like the real thing if a new, rubbery polymer supplants mostly stiff materials available today for tissue engineering.

  7. Autism leaves kids lost in face

    Brain-wave evidence indicates that 3- to 4-year-old children diagnosed with autism can't tell their mothers' faces from those of female strangers.

  8. Health & Medicine

    Autopsies suggest insulin is underused

    Autopsy studies indicate that the insulin-producing cells of people with type II diabetes are damaged.

  9. Health & Medicine

    Diabetes problems aren’t just old news

    Children who developed a type of diabetes that normally occurs only in adults suffer kidney failure, miscarriages, and death in their 20s.

  10. Chemistry

    Ions on the Move: Theory of hydroxide’s motion overturned

    New computer calculations reveal that a long-held belief about the hydroxide ion's movement in water is wrong.

  11. Earth

    Pharm Pollution

    Antibiotics in sewage sludge and manure have the potential to poison plants or end up in food.