Across Europe, rivers have sunk to historic lows because of brutal heat waves fueled by climate change. In Britain, conservationists are urging the government and water companies to take action to counter devastating droughts. Meanwhile, the source of the legendary River Thames has dried up and moved several miles downstream, further than it's ever gone before. Malcolm Brabant reports.
NOVI SAD, Serbia (Reuters) - Serbian sunseekers flocking to the riverside beaches of Novi Sad have adopted new pastime this summer - wading across a vast stretch of the Danube usually reserved for cargo barges and cruise ships.