Published: January 12th, 2023,
Last updated: May 28th, 2025
As UN Special Envoy on Climate Ambition and Solutions, the US billionaire is one of the most important links between politics, business and civil society in the United States. Bloomberg made his fortune (currently estimated at about 80 billion dollars) as an investor and owner of his financial information service Bloomberg and a TV station. He was mayor of New York City between 2002 and 2013, after which he became active in climate action. At the UN level, he pushes climate action in business and finance. Bloomberg has used at least 1.5 billion dollars of his private capital to date to fund political campaigns and environmental groups – including the „America’s Pledge“ campaign by US business and civil society when US President Donald Trump withdrew the country from the Paris Agreement in 2017. His foundation funds activism for renewables and against fossil fuels, among other causes.