Ken Kimmell

President

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Ken Kimmell is president of the Union of Concerned Scientists and has more than 30 years of experience in government, environmental policy, and advocacy. He is a national advocate for clean energy and transportation policies and a driving force behind UCS’s “Power Ahead” campaign to build a large and diverse group of clean energy leadership states. Prior to joining UCS in May 2014, Mr. Kimmell was the Commissioner of the Massachusetts Department of Environmental Protection (MassDEP), and served as chairman of the board of the Regional Greenhouse Gas Initiative. See Ken's full bio.

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Ken's Latest Posts

Two Years in, and the State of Our Union Is Weakened—but It’ll Be Strong Again

We have a weakened president, a resurgent House of Representatives, new governors committed to state-level progress, and an engaged and mobilized public. Read more >

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Photo by Cris Ovalle on Unsplash

A Big Win on Climate Change and Clean Transportation

If you would like to be inspired by an example of states working together on an ambitious plan to address climate change, read on—the following is a big deal! Read more >

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Nuclear power carries unique costs and benefits as an energy source.

Why We’re Taking a Hard Look at Nuclear Power Plant Closures

Nuclear power plants are controversial, for legitimate reasons. But we need to make hard choices. Read more >

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The Elections, and What They Mean for Climate, Energy, and Science

What do the election results mean for climate, security, energy, and science policy? Read more >

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Why We Met with Andrew Wheeler—And What Happened When We Did

On Monday, I met with Andrew Wheeler, the acting administrator of the Environmental Protection Agency (EPA). It didn’t go well. Read more >

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