canal

A man navigates his barge down the Bridgewater Canal near Walton Hall, Cheshire, as the warm weather continues.

Peter Byrne/PA

A man navigates his barge down the Bridgewater Canal near Walton Hall, Cheshire, as he enjoys the continuing warm weather

Algae blooms covering the surface of the Paddington canal basin in London, Britain 12 August 2013. Soaring temperatures, along with heavy downpours that have led to fertilisers being washed into ponds and lakes, has led to a larger than usual explosion of algae across many of Britain's waterways.

Andy Rain/EPA

Algae blooms cover the surface of the Paddington canal basin in London, UK. Soaring temperatures along with heavy downpours have washed fertilisers into waterways and led to the larger-than-usual explosion of algae across the country.

View of a cargo ship in the Panama Bay in Panama City on July 18, 2013. Panama on Wednesday officially requested UN inspectors scrutinize the cargo on the North Korean ship seized near Panama on Tuesday, which UN diplomats said could constitute a breach of the strict arms sanctions imposed on North Korea over its nuclear programme. North Korea said Wednesday that Cuban arms seized from the Pyongyang-flagged ship near the Panama Canal were part of a legitimate deal.

Rodrigo Arangua/AFP

A cargo ship passes through the Panama Bay in Panama City on Thursday. Panama on Wednesday requested for UN inspectors to scrutinise the cargo on the North Korean ship seized near Panama on Tuesday, which UN diplomats said could constitute a breach of the strict arms sanctions imposed on North Korea over its nuclear programme.