What's behind the rise in autism cases?

Related: Autism: The Hidden Epidemic?

1. Mental health
   1. Unmasking the agony: Combat troops turn to art therapy
   2. Helping or hovering? 'Helicopter parenting' backfires
   3. Scans may show brain changes in Gulf War illness
   4. 'We know that kids come home': Families feel renewed hope
   5. Born into captivity, 6-year-old can recover, experts say
2. Top health headlines
   1. Why good athletes are good-looking, too
   2. Too amazing to be true? Castaway's tale of survival baffles experts
   3. Don't curse the cold: Shivering may help burn body fat
   4. Fewer kids die in crashes but it's still too many, CDC says
   5. Drug companies, government team up in hunt for cures
3. Related videos & slideshows
   1. 
      Video
      Study suggests genetic indicator to suicidal thoughts
   2. 
      Video
      Chinese Woman Writes Simultaneously With Hands and Feet
   3. 
      Video
      7 hours of sleep may be all you need
   4. 
      Video
      Researchers Target ALS With Stem Cells