Donald Trump has pulled the US out of the Paris accord – but other Americans are standing with the world to help fight the ‘existential crisis’ of global warming

The alternative US dome – which is marked with the hashtag #wearestillin – is the biggest pavilion at the climate talks.
The alternative US dome – which is marked with the hashtag #wearestillin – is the biggest pavilion at the climate talks. Photograph: Ronald Wittek/EPA