Lying deep in the African desert sits the colourful and supersaturated hot springs of the world's 'hottest' town.

A truly remarkable quirk of the natural world - this volcano lights up the night sky in an iridescent blue when its sulphuric ...

Plus the area is studded with acidic ponds and geysers as well as a deep crater called Dallol. Advert Barbara Cavalazzi is from the University of Bologna, Italy, and has been conducting ...