LONDON, July 20 (Reuters) - As communities around the world battle the worst floods in living memory, experts warn such events may become more frequent due to climate change and that lessons still need to be learnt to limit losses.

Floods may result in lower death tolls than earthquakes, wars or tsunamis -- and therefore gain less international attention -- but they can cause similar devastation.

Recent weeks have seen a string of such disasters.

Parts of China had the heaviest rainfall since records began, killing more than 400. Some 770 people have been killed