Rising sea levels a threat to D-Day coastline

CAEN, France — As France prepares to mark 80 years since Allied forces landed on the beaches of Normandy, the historic coastline faces a new threat — rising sea levels linked to climate change.

More than 100 kilometers of Normandy's coastline still bears traces of June 6, 1944, including bunkers, shipwrecked vessels and other vestiges from the Allied troops' first step to freeing Western Europe from Nazi German occupation.

But now, the English Channel, from which 150,000 Allied troops conducted the largest seaborne invasion in history, threatens those same heritage sites.