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Our world faces many serious environmental challenges. We can meet them – but only if we act now.

Protecting the environment isn’t just an investment in the future – it also brings immediate public health and economic benefits. Climate change endangers people’s health and poses serious economic risks. So does declining ocean health. Pollution from coal power plants is the biggest contributor to our carbon footprint and cause hundreds of thousands of deaths every year. By acting boldly to address these threats, we can improve millions of lives today – and build a safer, healthier future for the generations to come.



June 2019

Mike launched Beyond Carbon, the largest-ever coordinated campaign against climate change in the United States. With a $500 million three-year investment, the initiative will employ advocacy, legal, and electoral strategies to accelerate coal plant retirements, stop gas rush, and win policy changes.


October 2018

Mike Bloomberg and Ray Dalio’s OceanX announced a new partnership to increase their support for the oceans, marked by their first joint project: an expedition to the Northeast Canyons and Seamounts Marine National Monument on OceanX’s marine research and exploration vessel, the Alucia.


May 2017

Mike Bloomberg was honored at Sierra Club’s 125th Anniversary Trail Blazers Ball for his longtime work in fighting climate change and his environmental leadership.


December 2016

At the C40 Cities Mayors Summit, Michael R. Bloomberg and Vice President of the European Commission Maroš Šefčovič announced the global mayoral board leadership for the Global Covenant of Mayors for Climate & Energy.

November 2016

At the 22nd Conference of the Parties (COP22) to the UN Framework Convention on Climate Change (UNFCCC) in Marrakech, local leaders announced the impact of their actions to accelerate world progress on meeting the commitments of the Paris Agreement.

June 2016

Mike Bloomberg joins European Commission Vice President Maroš Šefčovič to announce the new Global Covenant of Mayors for Climate & Energy, a newly merged initiative between the Compact of Mayors and the Covenant of Mayors.

January 2016

Mike Bloomberg addressed the 2016 Investor Summit on Climate Risk with UN Secretary-General Ban Ki-moon and Mary Shapiro, former Chairperson of the United States Securities and Exchange Commission.


December 2015

Paris Mayor Anne Hidalgo and UN Secretary-General’s Special Envoy for Cities and Climate Change Mike Bloomberg convene more than 200 mayors at the Climate Summit for Local Leaders, a historic event coinciding with the 21st Conference of Parties (COP21) in Paris.

April 2015

Bloomberg Philanthropies invests an additional $30 million in the Sierra Club’s Beyond Coal Campaign to help secure the retirement of half of the U.S. coal fleet by 2017.


October 2014

At the EU’s Mayors Adapt Signature Ceremony, Mike Bloomberg celebrates local leadership in fighting and adapting to the impacts of climate change, and encourages more European cities to join the Mayors Compact.

September 2014

At the U.N. Climate Summit, Mike Bloomberg joins Secretary-General Ban Ki-moon and government, business and civil society leaders to announce concrete actions to fight climate change over the next year.

September 2014

Paris Mayor Anne Hidalgo and UN Secretary-General’s Special Envoy for Cities and Climate Change Mike Bloomberg meet at Town Hall, demonstrating their eagerness to work together on cities and climate change leading to the Paris COP in 2015.

July 2014

Environmental Defense Fund, in partnership with Google Earth, releases an interactive map that identifies methane leaks in key areas such as Staten Island, Boston, and Indianapolis.

March 2014

Mike Bloomberg addresses U.N.-Habitats World Urban Forum in Medellín, Colombia, focusing on cities crucial role in fighting climate change.

February 2014

Mike Bloomberg welcomes UNFCCC Executive Secretary Christiana Figueres at C40 Mayors Summit, the first time C40 actively engaged with the UN process.


September 2013

New York City’s air quality reaches the cleanest levels in more than 50 years, with dramatic reductions in air pollutants since the launch of the Administration’s sustainability plan PlaNYC. Since 2008, levels of sulfur dioxide in the air have dropped by 69%.


August 2012

Bloomberg Philanthropies awards $6 million grant over 3 years to the Environmental Defense Fund to win strict regulations on fracking in the 14 states that produce the most natural gas.

March 2012

To demonstrate Mike Bloomberg’s overarching commitment to sustainability, Bloomberg LP completes an 8-acre solar energy system to help power the company’s New Jersey office.


July 2011

Bloomberg Philanthropies commits $50 Million to Sierra Club’s Beyond Coal Campaign to move America toward cleaner energy.


June 2009

The first section of the High Line, a new public park built on top of a 1930s-era elevated rail line, opens to the public. The High Line is the first public park of its kind in the U.S. and the culmination of more than three years of construction and ten years of planning.


December 2007

In Bali, Indonesia, Mayor Bloomberg urges larger focus on cities in fight against global warming to international delegates, as parties create a new roadmap to tackle climate change under Bali Action Plan.


January 2005

Governors Island becomes open to the public. At the beginning of the Administration, Governors Island was little more than an abandoned and neglected green space. By 2013, Governors Island becomes a major attraction for New Yorkers and visitors.


September 2003

Mayor Bloomberg announces the selection of an inter-disciplinary design team to lead the master planning process for the transformation of Fresh Kills in Staten Island into a world class park.