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Contents

Recent Communications

  • January 22, 2026: Sophie’s Planet — Prologue, Part II: “Mavericks”
  • January 13, 2026: Sophie’s Planet — Prologue, Part I: “Three Things All at Once, All the Time”
  • December 18, 2025: Global Temperature in 2025, 2026, 2027
  • November 21, 2025: Warning! This “Colorful Chart” is Censored by IPCC
  • November 7, 2025: A Climate Talk in Helsinki
  • September 16, 2025: Nature's Corridor / Sophie's Planet, Chapter 1 (draft): Ingvert and Karen Hansen
  • August 27, 2025: Sophie's Planet, Chapter 10 (draft): The Venus Syndrome & Runaway Climate
  • August 6, 2025: Seeing the Forest for the Trees (short version here)
  • July 17, 2025: Sophie's Planet

    → Go to older Communications

    Videos

  • November 2025: Climate Reckoning in ATLAS25 (Operaatio Arktis, Helsinki, Finland)
  • February 2025: Global Warming Has Accelerated: An Intimate Conversation with Leading Climate Scientists (SDSN virtual event, moderated by Jeffrey Sachs)
  • November 2023: Global Warming in the Pipeline: SDSN Webinar with James Hansen and Co-authors (SDSN virtual event, moderated by Jeffrey Sachs)
  • November 2017: Scientific Reticence: A Threat to Humanity and Nature (Facing Future discussion with James Hansen, Pam Pearson, and Philip Duffy; COP-23, Bonn, Germany)
  • November 2017: Nuclear Power? Are Renewables Enough? (Facing Future presentation with James Hansen and Michael Shellenberger; COP-23, Bonn, Germany)
  • July 2017: Young People’s Burden: Requirement of Negative CO₂ Emissions (CSAS video excerpt produced by James Hansen and Sophie Kivlehan explaining the Earth System Dynamics study)
  • March 2017: Sophie Sez #3: $1,000 for You – and a Better World for Your Children (Transcript)
  • March 2017: Sophie Sez #2: Obama Missed a Golden Opportunity – but We Can Still Win! (Transcript)

    → Go to older video

    Google Scholar

    Recent Scholarly Publications

  • Hansen, J.E., P. Kharecha, M. Sato, et al. 2025: Global warming has accelerated: are the United Nations and the public well-informed?, Environment: Science and Policy for Sustainable Development, 67(1), 6–44. https://doi.org/10.1080/00139157.2025.2434494
  • Hansen, J.E., M. Sato, L. Simons, L.S. Nazarenko, I. Sangha, P. Kharecha, et al. 2023: Global warming in the pipeline, Oxford Open Climate Change, 3, Issue 1, kgad008.
  • Li, J., B.E. Carlson, Y.L. Yung, D. Lv, J. Hansen, et al. 2022: Scattering and Absorbing Aerosols in the Climate System, Nature Reviews Earth & Environment, 3, 363–379.
  • Hansen, J., 2021: Foreword: Uncensored science is crucial for global conservation, In DellaSala DA (ed). Conservation Science and Advocacy for a Planet in Peril. Amsterdam: Elsevier, 2021,451 pp.
  • Beerling, D.J., E.P. Kantzas. M.R. Lomas, P. Wade, R.M. Eufrasio, P. Renforth, B. Sarkar, M.G. Andrews, R.H. James, C.R. Pearce, J.-F. Mercure, H. Pollitt, P.B. Holden, N.R. Edwards, M. Khanna, L. Koh, S. Quegan, N.F. Pidgeon, I.A. Janssens, J. Hansen, and S.A. Banwart, 2020: Potential for large-scale CO2 removal via enhanced rock weathering with croplands, Nature 583, 242-248, doi:10.1038/s41586-020-2448-9.
  • Rye, C.D., J.Marshall, M. Kelley, G. Russell, L.S. Nazarenko, Y. Kostov, G.A.Schmidt, and J. Hansen, 2020: Antarctic Glacial Melt as a Driver of Recent Southern Ocean Climate Trends, Geophysical Research Letters 47, 11, doi: 10.1029/2019GL086892.

    → Go to older publications

  • April 11, 2022: Nuclear power must be part of New York's energy solution, Commentary in Albany Times Union.
  • September 8, 2021: A carbon tax is key to addressing the climate crisis -- and carbon dividends could get Congress to support one, Op-ed with Jonathan Marshall in the Boston Globe.
  • June 1, 2021: Biden should impose a carbon fee immediately, Op-ed with Daniel M. Galpern in the Boston Globe.
  • September 9, 2020: A socially and environmentally just way to flight climate change. Op-ed with Daniel H. Miller in the Boston Globe.
  • October 10, 2019: Fueling the next Rim fire, Op-ed with Chad Hanson in LA Times.

    → Go to older popular publications

    "Storms of My Grandchildren" by James Hansen

    Presentations

  • February 29, 2012: Why I Must Speak Out About Climate Change: Presentation given at TED 2012 at Long Beach, California.
    + Download PDF, retouched (6 MB)
    + Download PPTX, retouched (6 MB)
    + TED video
    + YouTube video

    Presentations

  • October 2018: Aerosol Effects on Climate & Human Health: Urgent Research Needs Presentation in Xi'an, China at AGU-CAS Meeting.
    + Download PPT (20 MB)
    + Download PDF (3.3 MB)

  • November 2017: Young People's Burden: Averting Climate Disaster: Presentation in Bonn, Germany, at COP-23.
    + Download PDF (1.5 MB)

  • March, 2017: How Can Young People Take Charge of Their Future? Video taken at Williams College, MA on March 8

  • December 2015: Climate Change and Energy: How Can Justice Be Achieved for Young People and Nature?: Presentation given in Beijing, China on Dec. 22
    + Download PDF (5.0 MB)

  • February 2014: Symposium on a New Type of Major Power Relationship: Presentation given at Counsellors Office of the State Council, Beijing, China on Feb. 24.
    + Download PDF (4.1 MB)

    → Go to older presentations

    TV and Radio Appearance

  • April 7, 2017: TED Radio Hour: What Makes A Scientist Take A Stand?.
  • December 4, 2015: Amy Goodman interview in Paris
  • July 26, 2015: 1 p.m. CNN's Fareed Zakaria GPS

    In News

    November 5, 2025
    Yle (Finland): Jenni Frilander, World-renowned climate scientist to Yle: Climate change will not stop at what is thought, but much worse is coming (article in Finnish; web browsers provide automatic translation see video

    February 4, 2025
    The Guardian: Damian Carrington, Climate change target of 2°C is dead, says renowned climate scientist

    February 4, 2025
    Inside Climate News: Bob Berwyn, Hansen-led research documents global warming acceleration

    November 2, 2023
    Guardian: Oliver Milman, Global heating is accelerating, warns scientist who sounded clmate alarm in the 80s

    November 2, 2023
    Washington Post: Kasha Patel and Shannon Osaka, Famed Climate Scientist has a new, dire prediction

    October 7, 2023
    New York Times: Nadja Popovich and Adam Pearce, It's Not Your Imagination. Summers Are Getting Hotter

    June 20, 2022
    Washington Post: Robinson, To stop climate change, regulate carbon as a toxic substance

    June 16, 2022
    The Guardian: Harvey, Greenhouse gases must be legally phased out, US scientists argue

    → Go to older news articles

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