O’Hare’s Expansion Forced Chicago To Invest In Wetlands 20 Years Ago. Conservationists Are Seeing Results

PALATINE — The Deer Grove Forest Preserve was teeming with life on a recent Monday morning. A pair of sandhill cranes pecked at the preserve’s wet earth, hunting for snails, as joggers watched a snapping turtle slowly cross the walking path. Deer Grove, Cook County’s first forest preserve, wasn’t ...