Regular Contributors

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Daniel Grossman

Daniel Grossman, Ph.D.


Dan is an award-winning freelance print journalist and radio and web producer with more than 20 years of experience. He earned his B.S. in physics and his Ph.D. in political science, both from MIT.

Dan is a 2008 Alicia Patterson Foundation Fellow. He was awarded a Ted Scripps Fellowship in Environmental Journalism at the University of Colorado in Boulder, where he studied climate science. He has reported from all seven continents including from near both the south and north poles.

He has produced radio stories and documentaries on science and the environment for NPR’s Weekend Edition; for Public Radio International’s Living on Earth and its news magazine, The World; for the Australian Broadcasting Corporation; for Germany’s Deutsche Welle radio; for the BBC, the Canadian Broadcasting Corporation, and Radio Netherlands; and for the documentary show Soundprint and other broadcast outlets.

Dan has written for the New York Times, Boston Globe, Discover, Audubon, Scientific American and other national publications. He has produced three extensive micro-websites on environmental topics. He is author of Deep Water: As Polar Ice Melts, Scientists Debate How High Our Oceans Will Rise (Ted Books: 2012) and co-author of A Scientist’s Guide to Talking with the Media: Practical Advice from the Union of Concerned Scientists (Rutgers University Press: 2006).

Samantha Harrington

Samantha Harrington


Samantha is a journalist and graphic designer, with a background in digital media and entrepreneurship. "Sam" is especially interested in sharing how climate change is affecting people, animals, the ecology, and the economy across the U.S. Midwest.

She has reported and written for Yale Climate Connections since 2016. She also writes and does graphic design for feature stories about climate change through a partnership between Yale Climate Connections and iSeeChange. From her Wisconsin home, she works as the digital community manager at ISeeChange building both local and global engagement around people's daily interactions with the weather and with climate change preparedness.

In 2015, after graduating from the University of North Carolina, where she studied Journalism and Arab Cultures, she founded Driven Media, a roving newsroom, and she was a regular contributor to Women@Forbes, where she writes about women in business. She has also worked on a number of international projects. In 2018 she illustrated and designed an educational workbook for Syrian children living in Jordan and Lebanon for the organization Project Amal ou Salam. In 2014 she traveled to Amman, Jordan, to study why Jordanian women study STEM subjects at twice the rate of American women, and she has reported on maternal health issues in Malawi and on counter terrorism efforts in Morocco.

Bob Henson

Bob Henson


Bob is a meteorologist and journalist based in Boulder, Colorado. He has written on weather and climate for the National Center for Atmospheric Research, Weather Underground, and many freelance venues. Bob is the author of “The Thinking Person’s Guide to Climate Change” and of “The Rough Guide to Climate Change,” a forerunner to it, and of “Weather on the Air: A History of Broadcast Meteorology”, and coauthor of the introductory textbook “Meteorology Today”. For five years and until the summer of 2020 he co-produced the Category 6 news site for Weather Underground.

In 2018 Bob began a three-year elected term on the AMS Council, the governing body of the American Meteorological Society. His interests include photography, bicycling, urban design, renewable energy, and popular culture. A native of Oklahoma City, he earned a bachelor's degree in meteorology and psychology from Rice University and a master's degree in journalism, with a focus on meteorology, from the University of Oklahoma.

Karin Kirk

Karin Kirk


Karin is a geologist and freelance writer with a background in climate education. She's a scientist by training, but the human elements of climate change occupy most of her current work. Karin is particularly intrigued by how people talk and think about climate change, how it divides them, and the many ways individuals and society can help carry the climate conversation forward.

Karin has worked in many facets of climate change, beginning with undergraduate and graduate studies in paleoclimatology and human influences on the climate system. Her climate-focused work includes teaching in the classroom, designing curriculum, and leading faculty workshops to strengthen teaching about climate and energy. She has migrated her efforts from the classroom to the general public, via her TEDx talk and writing for Yale Climate Connections, EARTH magazine, and other venues.

In addition to her writing work, Karin is part of CLEAN, a NOAA-sponsored project to improve teaching about climate and energy. She also worked with NOAA's Climate Program Office to evaluate the effectiveness of the website. Previously, she worked for the Science Education Resource Center at Carleton College, collaborating with educators and academics to improve science teaching practices. She works on civic engagement around climate and energy issues in her home state of Montana.

Karin holds a B.A. in geology from Skidmore College and an M.S. in geology from Montana State University. She is a professional ski instructor and guide.

Bruce Lieberman

Bruce Lieberman


Bruce, a long-time journalist, has covered climate change science, policy, and politics for nearly two decades. A newspaper reporter for 20 years, Bruce worked for The San Diego Union-Tribune and other newspapers before becoming a freelance writer and editor in 2010.

He covers a variety of topics related to science and the environment. Bruce has been a regular contributor to Yale Climate Connections and its predecessor site since its founding in 2007. As a freelancer, Bruce has written for national magazines such as Air & Space, Scientific American, and Nature. His work also has appeared in The Washington Post,,, and other media outlets. Over the years he has also written for academic research institutions and private foundations.

A Californian, Bruce holds an M.S. from Columbia University’s Graduate School of Journalism and a B.A. from the University of California, Berkeley.

Diana Madson

Diana Madson


Diana has been a regular correspondent with Yale Climate Connections since April 2014. She enjoys exploring American stories about unexpected and innovative solutions to climate change. In addition to her freelance writing work, Diana is a program officer at Western Conservation Foundation, where she manages a philanthropic program to promote federal and state climate and clean energy policies throughout the West.

Diana was the Founder and Executive Director of The Mountain Pact, an organization educating and mobilizing mountain communities across the West on federal policy issues related to climate change and public lands. Diana also formerly served as the government affairs director and Sierra Climate Adaptation & Mitigation Partnership Director at Sierra Business Council. An experienced organizer and project manager, she has a background in environmental science, management and policy.

Diana received her masters degree in environmental management from the Yale School of Forestry & Environmental Studies after graduating with highest distinction from the University of California, Berkeley with a B.S. in society and environment and a B.A. in rhetoric.

Jeff Masters, Ph.D.

Jeff Masters, Ph.D.

Jeff worked as a hurricane scientist with the NOAA Hurricane Hunters from 1986-1990. After a near-fatal flight into category 5 Hurricane Hugo, he left the Hurricane Hunters to pursue a safer passion - earning a 1997 Ph.D. in air pollution meteorology from the University of Michigan.

In 1995, he co-founded the Weather Underground, and served as its chief meteorologist and on its Board of Directors until it was sold to the Weather Company in 2012.

Between 2005-2019, his Category 6 blog was one of the Internet's most popular and widely quoted sources of extreme weather and climate change information.

Molly Matthews Multedo

Molly Matthews Multedo

Fluent in English, Spanish, and Portuguese, Molly is the founding director of Acquazul, a nonprofit that creates multilingual broadcast and digital media on social and environmental issues for distribution throughout the Americas.

Her recent work includes Latino Verde, a Spanish-language radio and digital media series created to heighten public awareness of Latinx environmental professionals and their work through storytelling. Latino Verde was developed in collaboration with The Earth Institute at Columbia University, Project Drawdown, and Yale Climate Connections, and distributed nationally via Hispanic Communications Network (HCN).

She has been associated with Spanish-language educational media for much of her career. Her Spanish-language radio series on reproductive health garnered recognition from the Population Institute (World Media Award) and Planned Parenthood (Maggie Award) and she has developed science education media projects funded by the U.S. Department of Energy's Human Genome Project and the National Science Foundation. She was Senior Vice President of Hispanic Radio Network from 1992-1997 and returned in 2017 as a consultant. In 2018, she joined World Voices Media (formerly Pinyon Foundation), a California nonprofit media organization that often partners with Hispanic Communications Network.

She holds two graduate degrees from Columbia University: an MA in International Affairs from the School of International Public Affairs and an MS in Journalism from the Graduate School of Journalism.

Molly has maintained a home in Rio de Janeiro, Brazil, since 1998 and raised her three children there. She is an avid hiker and especially enjoys swimming in the ocean along the coast of Rio de Janeiro with the Otreino open-water swim team.

Dana Nuccitelli

Dana Nuccitelli


Dana is an environmental scientist, writer, and author of 'Climatology versus Pseudoscience,' published in 2015. He has published 10 peer-reviewed studies related to climate change and has been writing about the subject since 2010 for outlets including Skeptical Science and The Guardian.

Dana received a bachelor's degree in astrophysics from UC Berkeley and a master's degree in physics from UC Davis before becoming an environmental scientist. He says he was inspired after seeing 'An Inconvenient Truth' in 2006 to find out if the science presented in the film was accurate. He devoted several years to reading books, articles, and peer-reviewed studies about climate change.

In 2010, Dana began contributing to the climate blog and myth debunking website Skeptical Science, from which The Guardian picked up several of his timely debunkings of climate myths perpetuated by influential individuals and interest groups. In early 2013, he joined with John Abraham of St. Thomas University in St. Paul, Mn., on the Guardian’s new international environmental blogging network. From then through most of 2018, he co-published with Abraham on a weekly basis until the blog network was discontinued in late 2018. Dana has also published several climate-related studies, most notably on the 97 percent expert “consensus” among climate scientists that humans are primarily responsible for the observed global warming since 1950.

Daisy Simmons

Daisy Simmons


Daisy is a freelance writer and editor with more than 15 years of experience in research-driven storytelling. In addition to contributing to Yale Climate Connections since early 2016, she also writes and edits for CurrentCast, a syndicated daily radio series devoted to Great Lakes water issues.

Previously, Daisy served as Editorial Director for EcoMyths Alliance, a nonprofit that partnered with scientists to make environmental issues accessible and empowering to a general audience. In addition to overall content development, she was responsible for co-producing monthly myth-busting segments for Chicago Public Media, and editing an environmental science curriculum in partnership with the National Wildlife Federation. She has also served as a Chicago-based editor for Disney’s Ideal Bite and NBC/Universal Chicago.

Now based in the foothills of Northern California's Sierra Nevada mountains, Daisy is committed to applying her B.A. in Creative Writing from Colorado College to creatively, and credibly, write about new ways forward in confronting today's environmental challenges.

Peter Sinclair

Peter Sinclair


Peter is a Michigan-based videographer, specializing in climate change and renewable energy issues.

He has created hundreds of educational videos correcting climate science misinformation, including his independent "Climate Denial Crock of the Week" series, and the monthly "This is Not Cool" series for Yale Climate Connections, which has run since February 2012.

His videos, recognized by experts internationally, have established Peter as a frequent speaker on climate change, renewable energy, and communicating science.

In 2017, the National Center for Science Education recognized Peter as a “Friend of the Planet”.

A graduate of the University of Michigan, Peter lives in Midland, MI.

Jan Ellen Spiegel

Jan Ellen Spiegel

Jan Ellen Spiegel is a long-time Connecticut-based journalist whose career has included radio, television, print, and digital reporting. She has won awards for her reporting on energy, environment, climate change and food and agriculture. In 2013 she was the recipient of a Knight Journalism Fellowship at MIT on energy and climate.

Jan is a former editor at The Hartford Courant, where she handled national politics including coverage of the 2000 and 2004 presidential elections.Her stories appear regularly in the Connecticut Mirror, and she has published also in The New York Times, Undark, Inside Climate News, New Food Economy, and the Boston Globe, and has reported for public radio stations WSHU and WNPR and elsewhere.

A former editor at the Gazette in Colorado Springs, she spent more than 20 years as a TV and radio producer at CBS News and CNN in New York and in the Boston broadcast market. She graduated from the University of Michigan and attended Boston University’s graduate film program.

Jan is a native New Yorker and a big fan of the high desert Southwest in New Mexico.

Michael Svoboda, Ph.D.

Michael Svoboda, Ph.D.

Michael is a professor in the University Writing Program at The George Washington University in Washington, D.C., where he has taught since 2005. Before completing his interdisciplinary Ph.D. at Penn State in 2002, Michael was the majority owner and senior manager of Svoboda's Books, an independent bookstore that served Penn State's University Park campus from 1983 to 2000.

While operating the bookstore, Michael periodically served as a community columnist and book reviewer for The Centre Daily Times, and he also produced and hosted Libri, The Radio Book Revue, a weekly one-hour book program, for WPSU, the NPR affiliate owned and operated by Penn State.

Over the six-years of the program, he interviewed some 200 authors, including numerous leading nature/environment writers. An avid consumer of climate change-related reports, articles, and literature, Michael has published articles, book reviews, and review essays on ancient rhetoric and on philosophy, rhetoric and composition, and environmental communication. He is currently writing a book on Climate Change in American Popular Culture for Routledge.