Tens of thousands of activists march outside U.N. climate summit in Glasgow

Tens of thousands of climate activists marched Saturday through the Scottish city hosting the U.N. climate summit, physically close to the global negotiators inside but separated by a vast gulf in expectations, with frustrated marchers increasingly dismissive of the climate talks and demanding immediate action instead to slow global warming.

The mood at the protest in Glasgow was upbeat despite the complaints and bursts of rain. Climate protests were also held across Europe, including in London, Paris, Dublin, Copenhagen, Zurich and Istanbul.

Protesters condemned government leaders around the world, saying the climate talks so far have failed to produce the fast action needed. Activist Greta Thunberg on Friday condemned the talks as just more "blah, blah, blah."