Firefighters working at the scene of the train derailment and subsequent fire in Lac-Megantic, Quebec, yesterday. Photograph: Christinne Muschi/Reuters

The runaway fuel train that exploded in a deadly ball of flames in the centre of a small Quebec town had started rumbling down an empty track just min(...)

A traditional leather tannery in Fez, Morocco, where hides are dyed using an environmentally-unfriendly  process. Photograph: Gavin Heller/Robert Hardy World Imagery

Anyone who has witnessed the bizarre spectacle of the medieval tanneries in Fez, with hides being sloshed around in baths of dye by half-dressed navvi(...)