How the US supreme court and an Idaho couple upended wetlands protection

Experts fear half of the 290m wetland acres have lost federal protection and could be at risk from developers

Often dismissed as dismal wet bogs and rampantly cleared since European arrival in the US, the underappreciated importance of wetlands has been placed into sharp relief by a supreme court ruling that has plunged many of these ecosystems into new peril.

The extent of wetlands, areas covered or saturated by water that encompass marshes, swamps and carbon-rich peatlands, has shrunk by 40% over the past 300 years as the US drained and filled them in for housing, highways, parking lots, golf courses and other uses. Globally, wetlands are disappearing three times faster than forests are.