The pace was frantic. People were exhausted and cranky. Some spent nights in their offices. At times they felt they'd never get all the work done.

Katherine Bagley and Maria Gallucci

Global warming experts around the world say New York City's plans to reduce its greenhouse gas emissions and safeguard itself from the perils of climate change are a model for other cities. But most Americans, including New Yorkers, know little or nothing about this achievement, or that it was driven by Michael Bloomberg, who next month ends his third term as New York's mayor. Bloomberg's Hidden Legacy: Climate Change and the Future of New York City helps fill that gap.

It is being published in five installments on our website (read Part 1), but we encourage our readers to download our ICN Books App and purchase a full copy of the e-book. The ICN Books version is enhanced with video, audio and other extras, and 70 percent of the purchase price comes back to us to support our ongoing work.

Chapter Three: Assemble the Team

An Essential Recruit 

Rohit Aggarwala knew next to nothing about the debate brimming in New York City over how to accommodate a million more New Yorkers by 2030. The 34-year-old transportation buff, who goes by Rit, was a rising star at the global consulting behemoth McKinsey & Company. He was working on a big project and starting the run to make partner.

Still, Aggarwala was intrigued by the call he got in March 2006 from Marc Ricks, a former McKinsey colleague who was now Deputy Mayor Dan Doctoroff's chief of staff. For more than six months, Doctoroff had been creating a strategic land use plan to accommodate the extra people. But the project had become so complex that he and Bloomberg decided it needed its own staff and office. Would Aggarwala consider leading the transportation piece of the plan, Ricks asked?

"As an intellectual challenge, what could be more appealing for somebody who was interested in transportation, who is from New York and loves New York?" Aggarwala said, looking back at the chain of events that pulled him into Bloomberg's fold.

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