Our Experts

Carolina Herrera

Senior Sustainable Finance Lead, International Program

Carolina Herrera’s work focuses on clean energy and sustainable development in Latin America, particularly in Mexico and Chile. She works to identify ways that the countries of Latin America can achieve their development goals while creating resilient communities and protecting…

Alex Hillbrand

HFC Expert, Climate & Clean Energy and International Programs

Alex Hillbrand joined NRDC in 2015 to develop technical policies for a global phasedown of hydrofluorocarbons (HFCs). Today, he focuses on kicking off the Kigali Amendment to the Montreal Protocol, often collaborating with U.S. states, the HVACR industry, the U.S…

Daniel S. Hinerfeld

Director, Rewrite the Future, Communications

Daniel Hinerfeld, an Emmy-winning filmmaker and award-winning journalist, oversees Rewrite the Future, an initiative to help Hollywood tell stories about the climate crisis. He founded NRDC's documentary unit and created films including Sonic Sea, narrated by Rachel McAdams; Acid Test…

Karen Hobbs

Senior Advisor & Managing Director, Center for Policy Advocacy

Karen Hobbs works closely with the chief policy advocacy officer as principal deputy and advisor for the planning, management, and operations of the Center for Policy Advocacy. She also helps coordinate NRDC advocacy priorities and activities with Programs, Communications, and…

Katie Hobbs

Legislative Advocate, Government Affairs, Center for Policy Advocacy

Katie Hobbs works to defend bedrock environmental protections and advance federal priorities that safeguard public health. Prior to joining NRDC, she worked as a legislative intern in the U.S. Senate and supported international military officials at the National Defense University…

Darby Hoover

Senior Resource Specialist, Food Waste Initiatives, Health and Food, People & Communities Program

Darby Hoover specializes in issues related to food waste reduction, composting, anaerobic digestion, plastics, zero waste, recycling, paper industry reform, and sustainable packaging. Her primary focus at NRDC is helping to create strategies to improve the efficiency of the food…

Cullen Howe

Senior Advocate, Renewable Energy, Climate & Clean Energy Program

Cullen Howe advocates for renewable energy as part of the Climate & Clean Energy program in the Eastern region. Previously, he was senior attorney and New York office director at Acadia Center, where he focused on clean energy policy in…

Margaret Hsieh

Senior Attorney

Margaret Hsieh has litigated cases to keep toxics out of food, water, and air; protect public lands and imperiled species; safeguard the right of access to the courts; and promote transparency in government decision-making. Prior to joining NRDC, she clerked…

Ning (Lisa) Hua

Director, China Conservation Project

Ning (Lisa) Hua works to advance wildlife conservation policies in China with a focus on wildlife trade. She collaborates with Chinese and international partners to advance the global leadership of China in wildlife conservation issues, particularly as they relate to…

Yeh-Tang Huang

Schneider Sustainable Energy Fellow, Climate & Clean Energy Program

Yeh-Tang “Ricky” Huang focuses on reducing greenhouse gas emissions from the transportation sector, as well as promoting building efficiency in the Northeast. Prior to joining NRDC in 2022, he was an intern at Fervo Energy and the SDGs Advisory Council…

Tom Hucker

Manager, Eastern Campaigns, Center for Policy Advocacy

Tom Hucker brings decades of organizing and policy experience to his job as an advocate for safer chemicals, having worked as a community organizer, nonprofit entrepreneur, and a state and local policymaker. As a state legislator, Hucker sponsored successful legislation…

Pete Huffman

Staff Attorney, Climate & Clean Energy Program

Pete Huffman litigates cases to protect the climate and advocates for policy efforts to cut carbon pollution and other greenhouse gas emissions that are fueling climate change. He previously clerked for Judge Henry F. Floyd of the U.S. Court of…

Sara Imperiale

Litigation Director and Senior Attorney, Environment, Equity & Justice Center

Sara E. Imperiale litigates and advocates in support of low-income communities of color and environmental justice coalitions across the country. In her current role, she builds litigation capacity and strategy for NRDC's Environment, Equity & Justice Center to advance community-led…

Mark Izeman

Senior Director, New York Regional, People & Communities Program

Mark Izeman has worked at NRDC for 25 years on a wide range of environmental and public health issues, primarily in the greater New York–Northeast region. He has focused on such issues as local food, recycling, natural gas drilling, drinking…

Jamal Jackson

Litigation Fellow

Prior to joining NRDC, Jamal Jackson worked in the Concord office of a private law firm on plaintiff side civil litigation matters, including labor & employment, real property, and contracts. He previously interned at Aqua Terris Aeris and the Office…