This article is published as part of the global journalism collaboration Covering Climate Now. Good news about climate change ? Hard to believe, but yes. It happened last week in the coal-exporting city of Santa Marta , Colombia, and it ranks as the most promising climate news since the Paris Agreement was signed in 2015. For the first time, a critical mass of the world economy is working together to phase out fossil fuels, a step that scientists have long said is imperative to limit global