Many thousands of those who perished in last week's earthquake in Turkey may have died because of shoddy construction. Not only are unscrupulous builders to blame, but officials who allowed lax enforcement of building codes. Critics say the Turkish government has long refused to take the threat of earthquakes seriously, although much of the country lies in a very active seismic zone. So far, more than 12-thousand people have been confirmed dead. The death toll could reach 40-thousand. NPR's Jennifer Ludden reports from Istanbul.