2513741 comment Comment Why Copper? (Score 0, Redundant) 102 by Zaniwoop on Thursday January 26, 2006 @06:06PM (#14573277) Attached to: Plan To Bomb Mars For Signs of Climate Change Didn't recent news articles about a Yale study say that we're going to be short on copper soon? Then why are we shooting "huge copper slugs" at mars? Why not huge slugs made of some slightly more abundant metal? Or is the study just bunk?