Op-Ed

OP-ED CONTRIBUTOR How to Get Away With Insider Trading By JOHN C. COFFEE Jr. "Don't ask, don't tell" might be the new code for savvy Wall Streeters. OP-ED CONTRIBUTOR The Sand Mines That Ruin Farmland By NANCY C. LOEB Silica extraction for use in fracking is blighting the rural Midwest. THE STONE Letter From Austria: Is Europe's 'Tolerant Society' Backfiring? By WILLIAM EGGINTON Europe's limits on the content of political expression may be leading to unintended consequences. For more opinion, go to NYTimes.com/Opinion »