Georgina RannardClimate and science reporterErwan RivaultData journalistGetty ImagesThe world's largest iceberg is on a collision course with a remote British island, potentially putting penguins and seals in danger.The iceberg ...

The world's biggest iceberg is on the move again after being trapped in a vortex for most of the year.A23a is 3,800 sq km (1,500 sq miles), which is ...