Almost 400 all-time high temperatures were set in the north

Almost 400 all-time high temperatures were set in the northern hemisphere over the summer, according to an analysis of temperature records.

The records were broken in 29 countries for the period from 1 May to 30 August this year. 

A third of the all-time high temperatures were in Germany, followed by France and the Netherlands.

The analysis was carried out by the California-based climate institute Berkeley Earth.

Over the summer, there were 1,200 instances of places in the northern hemisphere being the hottest they'd ever been in a given month.

The hottest that this location has ever been...