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Science Friday
November 22nd, 2003
issue

  • Rebuilding the Heart: Marrow cells boost cardiac recovery
    Inserting a person's own bone marrow stem cells into an ailing heart via a catheter can improve heart and lung function in such patients. (p. 323)
  • Pieces of a Pulverizer? Sediment fragments may be from killer space rock
    Scientists sifting sediments laid down just after Earth's most devastating mass extinction 250 million years ago may have found minuscule fragments of the extraterrestrial object that caused the catastrophe. (p. 323)
  • No Assembly Required: DNA brings carbon nanotube circuits in line
    Using DNA as a scaffold, researchers have devised a simple way of creating carbon nanotube transistors—a feat that paves the way for more complex circuits made from these nanomaterials. (p. 324)
  • Quantum Pileup: Ultracold molecules meld into oneness
    Scientists have for the first time transformed molecules into an exotic state of matter called a Bose-Einstein condensate. (p. 324)
  • Bias Bites Back: Racial prejudice may sap mental control
    White people who hold biased attitudes toward blacks experience a decline in the ability to monitor and control information after brief interracial encounters, a new study suggests. (p. 325)
  • Giant picture of a giant planet
    The Saturn-bound Cassini spacecraft has taken the sharpest global portrait of Jupiter ever obtained, showing the planet's turbulent atmosphere in true color. (p. 325)
  • Whales of Distinction: Old specimens now declared a new species
    Japanese researchers have named a new category of living baleen whales to explain puzzling specimens dating back to the 1970s. (p. 326)
  • Moonopolies
    Recently discovered tiny satellites, all orbiting the outer planets in strange paths, may shed new light on a critical last phase in the formation of the planets. (p. 328)
  • Vision Seekers
    An investigation of school-age children who received cataract surgery after being blind from birth examines the extent to which these kids are able to perceive the visual world and the ways in which their brains respond to newfound sight. (p. 331)
  • Toxic cleanups get a boost
    Researchers have developed and field-tested a new technique that identifies specific soil microbes that can break down environmental pollutants. (p. 333)
  • Acid blockers stop stomach ulcers, too
    People who get ulcers from frequent use of anti-inflammatory painkillers can lessen their risk by simultaneously taking acid-blocking drugs. (p. 333)
  • Anklebone kicks up primate debate
    The discoverers of a roughly 40-million-year-old anklebone in Myanmar say that it supports the controversial theory that anthropoids, a primate group that includes monkeys, apes, and humans, originated in Asia. (p. 333)
  • SARS virus can spread in lab animals
    At least two types of mammals can acquire and transmit the virus that causes severe acute respiratory syndrome (SARS), and Chinese animal traders have high rates of past exposure to the virus. (p. 333)
  • Greek diet reduces inflammatory proteins
    People on a Mediterranean diet rich in olive oil and fresh fruits have lower blood concentrations of several inflammatory proteins linked to atherosclerosis. (p. 334)
  • Weight-loss compound may cause arrhythmia
    The weight-loss supplement Metabolife 356 causes subtle changes in heartbeat in test subjects. (p. 334)
  • Protein may predict heart problems
    Low blood concentrations of a protein called adiponectin may signal risk of heart disease. (p. 334)
  • Defibrillator access pays dividends
    Ready access to a heart defibrillator can boost the survival chances of someone who suffers a cardiac arrest. (p. 334)
  • Letters
    Letters from the Nov. 22, 2003, issue of Science News. (p. 335)
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