Assorted links by Tyler Cowen August 1, 2012 at 12:26 pm 1. Ash and lightning above and Icelandic volcano, hat tip to Gordon. 2. More on the signaling of Iranian girls (good link). 3. Why are theater reviews embargoed? 4. Does cultural diversity limit trade? 5. Free new chapter from Tim Harford’s The Undercover Economist, the full book is here.