It took years of careful planning by the United Nations and the 195 countries involved to reach the historic deal on climate change agreed in Paris on Saturday.
The deal struck at United Nations climate talks requires an overhaul of historic proportions for energy policies worldwide and a huge investment in cleaning up the pollution now damaging the Earth’s atmosphere.
A “high ambition coalition” of countries including the EU, some of the world's poorest and most vulnerable countries and the US, Chile, Colombia, Mexico, Iceland and Norway has called for a strong climate deal, with Brazil the most recent country to join the group.
More than a hundred countries have backed an ambitious new climate deal that could see levels of greenhouse gas emission cuts reviewed and ramped up every five years.
