Links for 2006-11-30

• Anti-matter creation observed in a star system.
  
• A 10% weakening of the conveyor current may have caused the recent mini-ice-age. The claim about removing a vital climate-change skeptic's argument seems like a strawman; my understanding is that clerical errors alone are enough to account for the hook in the hockey stick graph, an argument about the absence of the mini-ice-age is only only a supporting one, not a "vital" one.
• Antikythera, a 2200-year-old mechanism recovered from an ancient shipwreck, appears to have been an eclipse calculator.