demonstration in london. a man was steered away from crossing a protest march because he appeared �*openlyjewish'. now on bbc news...it�*s 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 at the latest ways to harness tidal energy. it's sort of like kitesurfing, but on the water. if it moves, it's a controller — paul's en route towards more accessible games.

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