Ken Kimmell


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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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Firing of Inspectors General Slides Us Closer to Autocracy

In the past six weeks, the Trump administration has removed five officials from leading their respective agencies’ inspector general offices. Unless we give these actions the forceful response they deserve, we risk looking back and marking these firings as the moment we crossed over the line to autocracy. Read more >

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What Is Earth Day Live? The Largest Online Mass Mobilization in History

The Union of Concerned Scientists stands united with the youth-led movement that is organizing Earth Day Live and the next generation of science and climate advocates who are participating in it. Here’s what you need to know about this remarkable event. Read more >

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While Pandemic Unfolds, EPA is Attempting to Sideline Science with Exclusionary New Policies

If COVID-19 can teach us anything, it is this: having the best science, data and analysis available to and used by government decisionmakers is not only important—it can be a matter of life and death. Unfortunately, the United States EPA apparently has not learned this lesson.  Tomorrow, the Union of Concerned Scientists is convening a nationwide virtual public hearing on the EPA science rule. The hearing will give anyone who wishes to speak the opportunity to do so, and UCS will submit a transcript to the administrative record before the EPA, which will require EPA to review and respond to substantive arguments that speakers make. Read more >

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As Congress Debates an Economic Stimulus, Where Should the Money Be Spent?

The government will be directly, massively guiding the direction of the economy. It is therefore imperative that we get this right. Read more >

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The US Senate Faces a Moral Imperative

Senators, now is the time to show your moral courage. Read more >

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