In spain, Tens Of Thousands of people have been demonstrating across the Canary Islands against a model of Mass Tourism they say is harming both the environment and conditions for locals. The demonstrators want limits on Tourist Numbers and more say on what they see as uncontrolled development. Now on bbc news, its click. This week, lara looks at the elemental solution to cleaning up Carbon Emissions from aircraft. We travel to the remote Faroe Islands to look