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Articles in Dec 22, 2007, issue of Science News

• North by northwest: the planet's wandering magnetic poles help reveal history of Earth and humans
  by Sid Perkins
• New clue to Down syndrome, leukemia link
• Correction
• Dead serious: experts worry about lack of progress in efforts to reduce lifeless zone in the Gulf of Mexico
  by Sarah C. Williams
• Meetings
• Tuning in to science
  by Tom Siegfried
• Tied up in knots: anything that can tangle up, will, including DNA
  by Davide Castelvecchi
• The Seventy Wonders of China
• Anthropology & archaeology
• Portrait of a meltdown: many factors led to 2007's record low in Arctic sea ice
  by S. Perkins
• Airy theory, but true
• Kaleidoscope Sky
• Limiting damage: fragile X symptoms modulated in mice
  by P. Barry
• Macho pheromones rile fellows
• Copernicus' Secret: How the Scientific Revolution Began
• Black hole bully: galaxy blasts its smaller neighbor
  by S. Williams
• Fishing curbs can lead to profit
• What's Eating You? Parasites—the Inside Story
• Mean streets: kids' verbal skills drop in bad neighborhoods
  by B. Bower
• Vitamin D: Blacks need much more
• A Guinea Pig's History Of Biology
• Not Yet: CDC panel questions antidepressant gene test
  by B. Vastag
• Novel fused protein quells inflammation
• Amylase with your veggies
  by Robert Krase
• Unseen risk: lifestyle, physical problems may underlie psoriasis link to early mortality
  by N. Seppa
• In search of safer marrow transplants
• Proof's absence
  by Mark Mailloux
• Furry math: macaques can do sums like people in a hurry
  by S. Milius
• Immune cells to fight leukemia
• Antiscience attitudes
  by Dennis Brown