South Dakota's permit for the Keystone XL pipeline expired, and the renewal hearing is bringing its local dangers into focus.

Wonder of wonders, the Marine Corps held an audit — but it wasn't careful enough to do the job.

Land around Chesapeake Bay (including Washington DC) is sinking half a foot per century from natural causes. Adding this to the sea level rise caused by global heating means that inundations will come sooner.

The US Should Eliminate Its Nuclear Arsenal — Not "Modernize" It.

Birth control pills permanently help prevent certain forms of cancer, even decades after a woman stops using them.