A story of hope: the Guardian launches phase II of its climate change campaign

With crucial climate talks on the horizon, Keep it in the ground turns its focus to hope for the future - the power to change and the solar revolution. Join us and help make that change happen

• Everything you wanted to ask about the campaign

A year ago, more than 300,000 people took to the streets in New York to demand action from their leaders on climate change.

Nearly the same number took part in similar events in 161 countries across the globe. For 24 hours, the sun did not set on the largest climate protest in history.