Record-breaking number of nations sign Paris Agreement in New York, hailing treaty as a new chapter in the fight against climate change
More than 100 leading companies issue statement of support for the treaty, which the UN labels a 'critical next step' towards a sustainable future
International body teams up with Earth Day in bid to plant nearly eight billion trees by 2020
With the first countries beginning to ratify the Paris Agreement, what loose ends still need to be tied up?
After six years in the job, the UN's top climate official says she will decline requests to stay on in post after term is up in July
Leading players at Paris Summit awarded Ewald von Kleist peace award in recognition of their part in securing climate treaty, highlighting growing link between global warming and national security
UN launches new social media campaign to boost public support for climate deal ahead of treaty-signing ceremony in April
Report offers a range of best practice initiatives to help policy makers make an immediate push to cut emissions
Latest UN analysis claims national climate pledges deliver half of the carbon cuts needed to prevent dangerous warming
Official analysis from UN confirms INDC pledges are insufficient to meet agreed threshold, but suggests target still in reach