Uncategorized
- Physics
Signs of mass-giving particle get stronger
The promising search at a collider in Switzerland for the Higgs boson—the crucial and last undetected fundamental particle predicted by the central theory of particle physics—became even more of a cliff-hanger as a new, strong hint of the particle appeared on the eve of the machine's second scheduled demise.
- Health & Medicine
Killing immune cells thwarts arthritis
Researchers have successfully treated people with rheumatoid arthritis by temporarily wiping out most of their antibody-producing immune cells.
- Health & Medicine
Prostate enzyme triggers cancer drug
A new drug reverses advanced prostate cancer in mice by enlisting the aid of prostate-specific antigen, an enzyme found in most prostate tumors.
- Astronomy
Rendezvous gets more personal with Eros
Venturing closer to a space rock than any satellite has ever gone before, the Near Earth Asteroid Rendezvous (NEAR)-Shoemaker mission last week took the sharpest images ever recorded of an asteroid.
- Paleontology
Early Biped Fossil Pops Up in Europe
A newly described, nearly complete 290-million-year-old fossil of an ancient reptile pushes back the evidence for terrestrial bipedalism by 60 million years.
- Animals
Shielded cells help fish ignore noise
Fish can sort out the interesting ripples from the background rush of water currents through sensors shielded in canals that run along their flanks.
- Math
Progressive Primes
Prime numbers have all sorts of remarkable and mysterious properties. Evenly divisible only by themselves and 1, primes can’t be written as the product of smaller positive integers. There are infinitely many of them, and they appear to be scattered somewhat haphazardly among the whole numbers. It’s not yet known if there are infinitely many […]
- Humans
From the April 21, 1934, issue
Archaeological explorations at Ur, creating elements of mass three, and bouncing radio waves off the moon.
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DNA Day
Celebrate DNA Day on April 30, commemorating the completion of the Human Genome Project in 2003 and the description of DNA’s structure as a double helix in 1953. The National Human Genome Research Institute offers a variety of resources, including genetic education modules for teachers and other curriculum materials and teaching tools. Go to: http://www.genome.gov/DNAday/
- Humans
Letters from the April 24, 2004, issue of Science News
Extreme makeover The observations in “Wrenching Findings: Homing in on dark energy” (SN: 2/28/04, p. 132: Wrenching Findings: Homing in on dark energy) are of stars and galaxies billions of light-years away and billions of years old. Has anyone ever thought about what the universe out there looks like today? Earl RosenwinkelDuluth, Minn. People have […]
- Astronomy
Puzzle on the Edge: The moon that isn’t there
Contrary to predictions, Sedna, the most distant object known in the solar system, does not appear to have a moon.
- Materials Science
Crafty Carriers: Armoring vesicles for more precise and reliable drug delivery
Materials scientists are designing tough, microscopic drug-delivery vesicles that could reach their targets intact and release their cargoes on cue.
