Ancient mammoth remains and a Nazi shipwreck: Europe’s shrinking rivers reveal past relics

By Laura Paddison, CNN (CNN) — Europe’s summer of extraordinary heat and drought has pushed some of its rivers to record lows, revealing long-submerged relics from ancient bones to century-old shipwrecks. The remains of what’s believed to be an ancient mammoth were discovered Wednesday on the newly exposed riverbed of the Danube in northern Bulgaria,