My Annual Letter on Philanthropy

Teamwork wins championships, as any sports fan can tell you. It’s no less important to solving public policy problems. Yet, for too long, it was lacking from one of the most difficult challenges facing the world: climate change.

In December of 2015, after more than two decades of stalemate, 196 nations committed themselves to reducing their greenhouse gas emissions at a climate change conference in Paris. They joined hundreds of cities, thousands of businesses, and countless citizens that had already made such commitments. At long last, all the major players have lined up on the same side of the field. But having a full roster is a far cry from having a great team, to say nothing of winning a championship. Success will require leadership that unites everyone behind a common mission and gets everyone to work together by promoting communication, collaboration, and coordination. It’s a role that Bloomberg Philanthropies has fully embraced.

As we look beyond Paris, Bloomberg Philanthropies will work with all the major players — nations, cities, businesses, and civic organizations — on a coordinated campaign to cut greenhouse gas emissions immediately. The Paris Agreement requires national progress beginning in 2020, but that won’t do. The challenge is too urgent. The dangers of delay are too severe. And the momentum that Paris has provided is too valuable to squander. The work of becoming a real team — not just one that exists on paper — must begin now.

The good news: We have already won two victories that are crucial to long-term success. First, the old argument between skeptics who saw no need to act and alarmists who predicted impending doom has lost its dominant hold on our political discourse. There are still some — ideologues on both sides of the climate issue and elected officials in both U.S. political parties — who insist on carrying on that argument. But most people have moved on, because — whatever one thinks of the scientific studies — the economic risks of inaction are too great and the public health dangers are indisputably severe.

The challenge is too urgent. The dangers of delay are too severe. And the momentum that Paris has provided is too valuable to squander.

The second major victory is no less important: The old argument between developed and developing countries over who was responsible for leading the way forward has finally given way to the realization that we all must do more, together. Nations united in Paris not after a moment of epiphany, but only after mayors and local leaders from around the world had spent years urging their national governments to join them in confronting the issue aggressively; after business leaders had expressed major concern about the issue; after investors had demonstrated their appetite for clean energy projects; and after citizens demanded action. The top-down approach to reaching a global climate accord had failed for decades. A bottom-up approach, with cities and businesses leading the way, proved successful.

The Declaration of Paris is presented by mayors at the Climate Summit for Local Leaders in Paris (from left: Seoul Mayor Park Won-soon, Mike Bloomberg, UN Secretary-General Ban Ki-moon, Dakar Mayor Khalifa Sall, President of UCGA Paris Mayor Anne Hidalgo, Rio de Janeiro Mayor Eduardo Paes, Istanbul Mayor Kadir Topbas, and President of COP21 Laurent Fabius)

Thanks to a newfound global consensus on climate change, plus plunging costs for clean energy and a growing recognition of the costs of inaction, we turned a corner in Paris. Today, for the first time, it’s possible to see a realistic path that leads to a low-carbon future. No shortage of difficult obstacles lie ahead, but overcoming them is possible — if the major players communicate, collaborate, and coordinate effectively. In the year ahead, Bloomberg Philanthropies will work with each group to ensure that happens. Here’s a preview of what our work will entail.


Cities have been among the most aggressive players on climate change, because they are the biggest source of the problem — they account for about 70 percent of global emissions — and also face the gravest health and economic risks. More than 500 cities representing over 425 million citizens have signed the Compact of Mayors, which commits them to setting ambitious goals and assessing their progress using transparent and uniform measurements. In Paris, nations adopted similar requirements to transparently report, and review over time, their progress in cutting emissions. During the Paris conference, Bloomberg Philanthropies and Paris Mayor Anne Hidalgo co-hosted more than 1,000 mayors and local officials at the Climate Summit for Local Leaders, drawing attention to the pioneering work already being done by cities.

Through my work as the UN Secretary-General’s Special Envoy for Cities and Climate Change and as President of the C40 Cities Climate Leadership Group, I’ve seen how eager local leaders are to cut emissions. But I’ve also seen how they are held back from acting because of a lack of resources and authority. For instance, many cities lack the credit ratings necessary to borrow money in capital markets. Without credit, they are unable to make major investments in low-carbon infrastructure that would reduce their carbon footprints, improve public health, and strengthen their economies.

Working with C40, we’re exploring new ways to give cities access to global capital markets. It’s one of the most important steps we can take to help cities reach the goals they are setting through the Compact of Mayors. But it’s far from enough.

In addition to lack of credit, cities are hampered by outmoded regulations, centralized monopolies, and national governments that may be less than fully supportive of cities’ climate goals. By showing national leaders that empowered cities will make it easier for them to reach national goals, we aim to promote more collaboration and cooperation among cities and national governments. As part of this work, we once again convened global cities in Washington, D.C., in May. Paris was only a starting point. City leaders know that the real work is just beginning.


Climate change carries major economic implications for every industry: droughts threaten crop yields and livestock, floods threaten cities and coastal real estate, and warming oceans threaten fisheries and marine life. Yet until recently, these threats were largely or entirely ignored by business owners, executives, and investors — and for good reason: There was little reliable information about them. That is slowly starting to change.

Climate change carries major economic implications for every industry.

One of the most effective ways of fighting climate change is also the least expensive: making markets more transparent. Giving business owners, executives, and investors accurate and reliable data about climate change allows them to price risk into their decisions — improving the stability of markets and making low-carbon investments more attractive. Successful business leaders do not have the luxury of ignoring future risks and hoping for the best. They must work to identify and mitigate their exposure to risks, and climate change is no exception.

Two years ago, Hank Paulson, Tom Steyer, and I created the Risky Business Project to raise awareness of the economic challenges that climate change presents in the United States by providing localized and industry-specific climate data to business leaders and policy makers. Since then, Bloomberg Philanthropies has expanded that work by supporting two other efforts that hold great potential to improve the transparency of markets.

The first is the Sustainability Accounting Standards Board (SASB), which creates disclosure standards for companies. SASB helps companies assess their internal sustainability efforts while enabling investors to compare similar companies across a range of rigorous sustainability metrics. This year, after finalizing draft standards for 10 sectors and 79 industries, SASB will launch a pilot reporting program involving several companies to demonstrate how disclosures are a cost-effective and compelling way for businesses to understand the material risks that climate change and other sustainability factors pose to their operations.

The second effort began at the Paris climate summit, when Bank of England Governor Mark Carney, in his capacity as chairman of the Financial Stability Board (which monitors the global financial system), asked me to a lead a new taskforce on the financial risks of climate change. Since then, we’ve begun working with banks and other financial institutions to develop a common set of voluntary guidelines to bring transparency to the opaque risks that climate change presents to financial markets. The market cannot accurately value companies, and investors cannot efficiently allocate capital, without reliable data on the risks they face.

The growth of my company, a financial information tech start-up I founded 35 years ago, is a testament to the fact that investors value transparent markets and reliable data. Market forces, combined with technological innovation, are the two most powerful drivers of change in the world. If we’re going to win the battle against climate change, we need to tap into both of them — and that starts with giving investors better information about the true costs and risks of climate change, as well as the potential dividends of low-carbon projects and companies.


Like cities and businesses, citizens and local communities have self-interested reasons to fight climate change, but they don’t always have the tools to do so. Working with the Sierra Club, we are empowering communities across the United States to close coal-fired power plants. Of course, coal pollution doesn’t just contribute to climate change. It also kills thousands of people a year through heart attacks and respiratory disease. Our Beyond Coal campaign has already phased out 232 coal plants and helped reduce the number of people in the United States killed by air pollution from coal each year from 13,000 to 7,500. That’s a big reason why the United States is already nearly half-way to the emissions reduction goal it set in Paris.

Like cities and businesses, citizens and local communities have self-interested reasons to fight climate change

By the end of 2017, we aim to secure the retirement of half the United States coal capacity, compared with 2010 — something that was almost unthinkable back then. Building on the success of Beyond Coal, the Sierra Club has also launched a new program — called Ready for 100 — that helps cities move toward a full transition away from fossil fuels and toward 100% renewable energy.

Empowering communities also means supporting individuals who develop creative new ways to engage the public. During the COP21 summit in Paris, Bloomberg Philanthropies supported Olafur Eliasson and Minik Rosing’s Ice Watch, an installation of ice collected from an iceberg drifting off of Greenland. They set it in the Place du Panthéon, arranged in the shape of a clockface. As it slowly melted during the course of the summit, it drew the world’s attention to the pressing climate crisis. The best public art makes people stop and think — and this installation went further, inspiring those who saw it in person or online to act.


Now that national governments have committed to action, we must ensure that they follow through. The Paris Agreement included a provision (which city leaders had pushed for) committing nations to regular and transparent reporting of progress. That will allow the global community, as well as cities and voters, to hold national governments accountable for fulfilling their commitments.

At the United Nations’ Climate Action 2016 Summit in May, one subject of discussion was the steps national leaders can take to empower local and regional officials. Here in the United States, there’s new momentum to develop smart, forward-looking energy policies. Bloomberg Philanthropies is helping governments craft energy policies that shift electric power production away from coal to renewable energy sources. These policies are putting us on track to meet the 2025 emissions goals set by the Obama Administration in its Paris pledge, as well as the 2030 target set by the EPA’s Clean Power Plan.

While the Supreme Court temporarily halted full implementation of the Clean Power Plan in February 2016, many states are proceeding on their own, and some — including California and New York — have set goals that far exceed what the federal government calls for. In a political climate plagued by gridlock and hyper-partisanship, we must continue to look beyond Washington for leadership.

Each major player in the fight against climate change has a crucial role to play — and, for the first time, every player has committed to action. But success is only possible if they work together.

At Bloomberg Philanthropies, we take to heart that most important rule: The whole is always greater than the sum of its parts. With teamwork, and by focusing on data, we can win the battle against climate change. And in the process, we can save thousands of lives and build a stronger and more prosperous global society.


Michael R. Bloomberg

Read the full annual report from Bloomberg Philanthropies at

Entrepreneur, philanthropist, three-term mayor of New York City, father & grandfather, and 2020 candidate for President of the United States

Entrepreneur, philanthropist, three-term mayor of New York City, father & grandfather, and 2020 candidate for President of the United States