Hi! I’m Jessica, a climate psychologist,
activist and writer.

I am a climate psychology and communication researcher with a particular interest in solutions-focused framing and storytelling. I write, speak and teach about effective climate communication, how the climate crisis affects our mental health, and taking impactful action from a psychological lens. I’m an advocate for intersectional approaches to environmentalism, and the importance of cultural values in creating fair and community-led solutions.

I’m the Director of Research and Development at climate communications initiative New Zero World, an adviser to the HERO UK Climate Justice Circle and a campaigner in the Stop Rosebank coalition. I also work as an independent behavioural science consultant, train activists on effective communication and work with schools and universities, supporting students to find their place in the climate movement. I focus on making complex topics around climate, intersectionality and mental health more accessible and am a leading speaker on these topics, having worked with groups and organisations across the world.

Latest writing

  • Meet the psychologist who matchmakes philanthropists with cash-strapped activists

    Jessica Kleczka speaks to fellow climate psychologist Margaret Klein Salamon about radical climate activism and why it works.

  • ‘Climate deniers are victims not villains’: A psychologist’s guide to winning them over

    I encounter climate deniers all the time on social media, as some of my work is in science communication and public advocacy. In my newest article for Euronews Green, I examine the different types and causes of climate denial, and how we can tackle them.

  • Hope in Action: 10 wins against fossil fuels in 2022

    2022 was the year world leaders, businesses and society woke up to the fact that there is no future in fossil fuels, and the need for a just transition towards clean energy.

  • Beyond eco-anxiety: How climate change affects your mental health

    The climate crisis is arguably the greatest threat to life on our planet. It is a threat that we have met with astonishingly inadequate action. Climate change is a perfect storm – because it is often invisible and seen as a future problem, our psychological reaction often doesn’t match the urgency of the crisis.

  • Anarchist communes, activism and flight-free: Inside my nine-country train adventure in Europe

    Interrailing is convenient, flexible and often cheaper than flying. Here's how I planned a nine-country trip.

  • Exposed: Equinor’s five biggest climate crimes

    Equinor has only recently risen to public consciousness in the UK over its Rosebank oil field - but the Norwegian oil giant is planning a number of planet-wrecking projects around the world.

  • The Rosebank oil field would be a betrayal for future generations – we cannot let it go ahead

    Danielle Sams and Jessica Kleczka on how collective action is mobilising against the Tory government’s oil and gas developments in the run-up to COP27.

  • Explained: How does oil and gas licensing work?

    In spite of repeated warnings from climate experts, the UK is planning a licensing round later this year, which would shoot us past the critical temperature threshold. But how does it all work, and why is campaigning important at every stage of the process?

  • “Colonialism hasn’t stopped, it just changed shape”: The toxic truth about natural gas

    In the race to phase out coal and oil, gas has been branded as a greener and cleaner midterm solution as we shift towards renewable energy systems. In my interview with Ya’ara Peretz from Gastivists, she shares why clean gas is a dirty lie, and how fossil gas fuels destruction and geopolitical conflict.

  • “By failing to end fossil fuels, world leaders are feeding new Putins”

    In conversation with climate activists from Ukraine and Russia about the links between the war and the world's dependence on fossil fuels

Read my paper: Not about us without us - the feelings and hopes of climate-concerned young people around the world

I co-authored my first peer-reviewed research paper on climate and mental health with the Institute of Global Health Innovation at Imperial College London, which has now been published in the International Review of Psychiatry.

It was written by 23climate-concerned young people around the world, outlining how the climate crisis and political inaction affect mental wellbeing, and how society can deal with these concerns in a more functional and supportive way.

On the mind: Climate anxiety
Interview with Riverford

For World Mental Health Day, I was interviewed on on climate anxiety and the research behind it for Riverford’s Wicked Leeks magazine . I speak about avoiding despair, channelling difficult climate emotions into action, and how I deal with doing climate work full-time.

”Rather than demonising climate deniers and skeptics, it’s helpful to remember that often, those behaviours can actually stem from climate anxiety, and what people need is a more functional way of dealing with emotions.”