Abstract

Aerial view of sailing boats that lay in...Aerial view of sailing boats that lay in the water of Lake Starnberg which water is covered with pollen near Starnberg, southern Germany, on May 8, 2015.  AFP PHOTO / DPA / PETER KNEFFEL +++ GERMANY OUTPETER KNEFFEL/AFP/Getty Images

Peter Kneffel/AFP

Aerial view of sailing boats that lay in the water of Lake Starnberg which water is covered with pollen near Starnberg, southern Germany

A man waits to cross a road junction in Singapore August 29, 2013. REUTERS/Edgar Su

Edgar Su/Reuters

A man waits to cross a road at a junction in Singapore