To the non-expert eye they may seem a set of mirages, but these turquoise-purple-pink visions are what ground-level potash ponds look like near Arches National Park.
Some of the world's top oil producers have decided to abandon coal and focus instead on ramping up production and trading of liquified natural gas as a cleaner fossil fuel alternative.
The World Coal Association's chairman and Glencore executive, Mick Buffier, has called governments to increase investment in low emission technologies.