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The future will be both better and worse than we imagine


In July, I gave the most emotional talk I’ve ever given, and the one of which I’m most proud, based on my “Polar Thinking” blog post from earlier this year. It combines the personal and the professional, threaded together in a plea to see the world for its nuances and contradictions, its shades of grey, rather than with an over-simplified, black-and-white view.

Below is the transcript, followed by a couple of podcasts you might enjoy. But if you have a quiet 40 minutes to spare, you can watch the video of me giving the talk instead.


1. How climate sceptics are not all angry or selfish (or wrong)

The phone rang. Sitting at my desk in the University of Bristol, eight years ago, I picked up. “Hello – may I speak to Dr Edwards, please?”. “Speaking,” I replied. “This is Barry,” he said.

Damn. I knew I should have taken my phone number off the university public website after starting to comment about climate science online. Barry was a climate sceptic, what some would call a ‘denier’. He’d been challenging me that day on Twitter: about the validity of sea level rise predictions, the line to draw between climate science and policy, and the motivations of climate scientists. Was he going to start ranting at me? Maybe even threaten me? I’d heard of the toxic emails sent to colleagues in the US.

I suddenly felt a little vulnerable, even at the end of a phone line, my professional space intruded on. As a junior scientist, still on temporary contracts, I felt unprepared for this. Would I say something wrong that would end up splashed across the sceptic blogs, perhaps even sent to a sympathetic newspaper? I felt nervous, even a little shaky.

Barry sounded… mild-mannered. I pictured a well-meaning, if slightly awkward, uncle in a crumpled jacket. He was respectful, even deferential, and explained that he thought picking up the phone and just having a conversation would be better than continuing with a back-and-forth on Twitter. I think he said it would be nice to meet some time and talk some more, if I wanted to. That we probably had more in common on the science than I thought. That his interest, really, was in defending climate science against error and misuse. After we talked for a few minutes, I put down the phone and thought: “He sounds nice”.

Over the following years we did meet in person, several times, and struck up a bit of a friendship. We talked a little about our own lives, but mostly about the online climate ‘debate’, as it was called until recently. He had been a chemist once, and prodded me about claims he thought were not robust. Several times, I found he was right. I lightly teased him about his incredible verbosity, both online and in person: Barry makes his points in great detail. Online, that can sometimes feel overwhelming. In person, he just sounds like someone who cares about getting it right, like me.

Barry stuck up for me against sceptics that were genuinely aggressive, and stuck up for climate science when outside criticisms were unfounded. We’re not so much in touch anymore, perhaps having said most of what we wanted to say to each other, and there were times I did find his criticism or manner frustrating or unproductive.

But Barry was the first of many climate “contrarians” I met or talked with that engaged in civil dialogue, at least some of the time, and made some reasonable criticisms of my field. Another was Jonathan – a professor of physics, and the main person who now adds my new accomplishments to my Wikipedia page. Paul, another academic, who made fair criticisms about statistical analysis and thought exchanges like ours could extinguish climate scepticism. Josh, not his real name, the harsh cartoonist who has lampooned many of my colleagues, in person was sweet and gentle. He took a shine to me and drew a cartoon of me as a magical Tinkerbell, saving climate science.

Cartoon of Tamsin as Tinkerbell the fairy, caption "The Flimsin: Climate Science You Can Believe In"

And Sean, whose last name I do not know, whose dry humour on Twitter always made me smile. Recently, knowing I was ill, he suggested to his sister looking for a new craft project that she make something for me. More about that later.

These conversations showed me that climate sceptics are not always angry, or selfish. They’re also not always necessarily wrong, if you listen to the ones with thoughtful reflections or suggestions about the science, even if they sometimes word them rather strongly.

Even the sceptics that do start angry and wrong often cool down and listen, if you listen and acknowledge the position they are coming from. Each sceptic is different, each conversation, and each can surprise you.



2. How climate change is both human and natural

I do still have anonymous climate sceptics, often from overseas, replying to something I’ve said on Twitter with some variation on the idea that climate change is completely natural. Yes, sometimes they are angry, and they are definitely wrong. Occasionally I also hear people argue the opposite – that every change we see in our climate and weather is our fault.

But the truth is somewhere between the two, even if the balance does change over time. The natural influences acting on our climate are always changing. In the distant past, it was only these.


Photograph of solar system model, apparently clockwork
Image: Norman Lockyer Observatory

Our orbit around the sun is never fixed, unlike the clockwork models of our solar system. It slowly alternates between circular and elliptical, our axis tilted a little more or a little less, pointing towards one star or another. The North Star is only temporarily so. These subtle shifts occur over tens of thousands of years, affecting our seasons and how much of the sun’s energy falls on each part of the Earth at a particular time in year, acting as a quiet pacemaker for the planet stepping in and out of the great ice ages every hundred thousand years.

Even the sun itself is inconstant. Sunspots, those sooty fingerprints that appear on the sun’s surface with an eleven year cycle and also vary over much longer timescales, are the mark of a sun that is temporarily stronger. More energy means a warmer planet. Around 1640, the sunspots stopped – virtually absent for two generations. Europe, already cooled by volcanic eruptions such as Papua New Guinea’s Long Island that were dimming the sun, plunged more deeply into winters in those years. Two centuries later, the astronomers Annie and Edward Maunder looked back at the data and wrote about that strange absence, and the period now takes their name: the Maunder Minimum.

Graph of sunspot cycle number from 1600 to about 2010, showing the 11 year cycle and longer-term changes such as Maunder Minimum.

These puppeteers, the orbital and solar cycles, are still pulling on the strings of our planet, even if they mostly fade into the background now in comparison with the attention-seeking activities of humans. Volcanic eruptions, like the huge Mount Pinatubo in 1991, emit the gas sulphur dioxide, that combines with water in the atmosphere to make tiny droplets that hang in the air and reflect some of the sun’s rays away. Pinatubo temporarily reversed around 40% of global warming since the preindustrial era, but for only a matter of months.

Picture of Annie Maunder
Image: Royal Museums Greenwich

Sunspots still come and go. Some of the warming in the first half of the 20th century was caused by an increase in the sun’s strength. A long, deep minimum in the 11 year solar sunspot cycle from 2007-2009 cooled the upper atmosphere and may have helped to cool our winters in Europe. Last month, there were signs we had begun to descend into the next solar minimum, and that it will also be long and deep.


And the tick tock, tick tock of the orbital cycles continues. But we have now prevented the next ice age we were due, with our unintended increase of the global thermostat.

Greenhouse gases like carbon dioxide and methane are not inherently bad. Without the greenhouse effect protecting us, this would be a cold and different planet – around -19 degrees Celsius, instead of +15. The problem today is one of balance – too much of a good thing. Carbon dioxide has waxed and waned with the ice ages over at least the last 800,000 years. But the extra amount we have let slip into the air has taken us to a level probably not seen in 2 or 3 million years.

The molecules of CO2 absorb heat energy from the Earth, which makes them wriggle and flex more, until they let go of their parcel of energy in a random direction. That direction is often back down to Earth, which heats us a little more.

Strangely, our coal burning is having a cooling effect too, just not as strong as the warming. Burning coal releases sulphur dioxide – that same volcanic gas, forming particles that reflect the sun’s rays. But it’s not enough to offset its industrial neighbour, CO2 – it only compensates about 30% of the warming.

So climate change is both human and natural. And human influences on climate are both warming and cooling. But our best estimate for that balance right now is that all the warming since 1951 has been caused by humans.


3. Polar thinking

For this part of the talk, I read out my blog post “Polar Thinking“. Please read this, then come back for the rest of the talk.


4. The future will be both better and worse than we imagine

We are the storytelling ape. Storytelling is in our blood and bones. Why do we need stories? To imagine: what if. What if we did this, or that? What would we do, if we faced a monster – would we be brave, or hide in the dark? We test different scenarios, like dreams, both the fantastical and the mundane.


I often hear two stories about our future. One is not always obvious, not always told out loud: it is the story that our climate will always be the same. We plan our lives – our housing, our power, our jobs – as if the future will be just like today, only with a few more wrinkles. That the weather outdoors and the floods at our feet will be the same as when we were children, and the wildfires, and the wild Arctic sea ice that traps iron ships in the northern seas. That global warming will be remembered as a footnote, a cautionary tale, a temporary and inconvenient untruth.

The other story is that our society will always be the same. That nothing will be done about our emissions – the world will continue, business as usual. That global warming will be our end, and our fearful destiny, burning bright, a hothouse hell ignited by selfishness, and inertia, and greed and denial, that leads to our destruction.

The future will be neither of these. Our climate will change, more noticeably and perhaps more quickly than today. Our houses, power, cars, and industries will change, as they are already starting to. Our conversations will change. They already have.

Photograph of school climate strikes
Image: Time
Extinction Rebellion protest, Easter 2019

This thermometer shows climate change by degree: global warming since the preindustrial era. We are at the first step: 1 degree Celsius. The future will not stay here. At the top of the thermometer is 4 degrees Celsius, or 5. This is the world of business as usual, in fact business-worse-than-usual, burning through fossil fuel reserves as if they were a box of matches.

Thermometer showing around 3 degrees Celsius of warming.
Image: ClimateActionTracker.org, 28th September 2019. Since July when I gave this talk, the predicted temperatures have decreased by 0.1 degrees Celsius.

But there is no longer such a thing as business as usual. We have put some climate policies in place, taking actions, making progress. This blue band shows the predicted warming in the year 2100 taking into account those policies – around 3.3 degrees of warming. And we also have pledges for what we intend to do, including those for the Paris Agreement. These would take us a little lower, to 3 degrees. You can watch how these predictions change, over the coming months and years.

The future, then, is already better than we imagined it would be, but still worse than we imagine it could be. And each new policy and pledge will bring the future further down this scale, towards the Paris Agreement targets of 2 and 1.5 degrees. There would still be serious consequences at this level of warming. But climate change is not something that is simply won or lost. It is an arc that we can choose to bend toward justice. We will all be both heroes and villains, and wake up the next day and be heroes again. We will create our story, word by word, deed by deed.

I will end with a poem by the author Nick Drake, which he wrote after he sailed the Arctic seas:

The Future.



If you liked this, my colleague George Adamson talked about polarisation in a podcast on The Climate Culture War (from 20:00), and I discussed scientific uncertainty and talking to people with different views in the climate podcast No Planet B.


  1. I did a chemistry degree, them a masters in cybernetics, then a career in IT. So wrong sort of ‘nerd’ !.. perhaps i should write a blog post from my perspective of you.. and you left out the cake photos… take a moment, us members of the public, how do they ever get to interact with scientist or anyone in the public domain, so if a bit verbose, these are complicated issues very few characters on twitter and if you recall i have frequently said twitter is one of the worst ways to have an actual conversation. And I’ve always suggested people should meet in person.. if only to dispel cliches….. and make it harder to fling stereotypes at each other, though I have always said I’m on the side of climate scientists and science,though not the politicised ones. In person, well their is a video of me and Tamsin on a panel debate with the Open University… Tameness will perhaps reflect that it is ‘risky’ for a sceptic to approach a climate scientist to talk about issues, as I’m sure you recall our mutual Peter Gleick incident………and their was a time when you thought all sceptics were deniers (of a couched creationist type)… I thought you very naive…

  2. dear dr. Edwards,

    I wish you all the strength you need to meet the future, be it bad or good.
    I wish you all the best.

    I have read your two posts. I love the intermingling of the two stories … mmm … the four stories.

    I have played a bit with your last two sentences of part 1.

    These conversations showed me that climate alarmist are not always angry, or selfish. They’re also not always necessarily wrong, if you listen to the ones with thoughtful reflections or suggestions about the science, even if they sometimes word them rather strongly.

    Even the alarmists that do start angry and wrong sometimes cool down and listen, if you listen and acknowledge the position they are coming from. Each alarmist is different, each conversation, and each can surprise you.

    Again, I wish you a bright future, Leonardo

  3. ‘Tameness’ is an auto correct for Tamsin.. (smsrtphone,& 1finger late night typing)

    It is possible that again Tamsin gets some pushback from some scientists and climate activists for who she chooses to talk to. This has happened before, a scientist, Peter Gleick did the I’m a senior scientist routine when he took issue with the very name of this blog and who Tamsin was talking to.. Tamsin’s response after a series of polite emails was anything but tame…

    ‘Dear Peter,

    Just a quick note.

    One of the most important things I have learned in my (fairly extensive) public engagement activities is not to lump people together in a homogenous group. I repeatedly defend Barry because he works hard *not* to be Anthony Watts.

    I hope you’ll consider taking each person and their views on their ownmerits, or lack of, in future conversations. I would personally be infuriated if I was dismissed on account of the behaviour of a group of people I talk with. Every single person I talk with has a different viewpoint, and I learn a lot about how better to communicate climate science by listening to them. If we dismiss swathes of people by association then our attempts at communication become futile: we end up only ‘preaching to the converted from an ‘ivory tower’, as it were.

    Of course, if communication of climate science is not your aim, then it is your choice if you prefer to communicate with nobody!

    My best wishes,


    A couple of notes.. Tamsin subsequently met Anthony Watts (as I have and who I would consider a friend) and I wonder if on meeting him Tamsin’s viewpoint on who she thought he was changed.. (reinforcing my point about meeting supposed opponents) The other note. Is less than 24 hours after that email.. Peter Gleick impersonated a board member if the Heartland Institute and phished documents from them. So every good dead can have unforseen consequences.

    Peter Gleick incident here

  4. Tamsin:

    “Strangely, our coal burning is having a cooling effect too, just not as strong as the warming. Burning coal releases sulphur dioxide – that same volcanic gas, forming particles that reflect the sun’s rays. But it’s not enough to offset its industrial neighbour, CO2 – it only compensates about 30% of the warming.”

    Please can you tell us if you are aware of any work predicting the increase in surface temperature which we will see next year once the IMO Global Sulfur Cap in Marine Fuels comes into force? Obviously it is important that this increase is correctly calculated and identified to avoid incorrect attribution of any warming to the wrong factors.

    Thank you.

  5. The persistence of belief in the 4-5oC sensitivity really is the Virgin Birth of the climate faithful.
    Even the most reasonable acolytes of the climate consensus seem to find it difficult to not believe in the dogma of eventual Apocalypse.
    That aside, thank you for at least communicating the same deal that skeptics are not evil. Perhaps, someday, climate science will once again recognize that skeptics and skepticism are both good and vital for healthy science.

  6. Hi Barry,

    Sorry for misrepresenting your career – I should have checked it, especially as we had got back in touch since writing the talk. And I can now that see the transcript doesn’t sound as warm in print as the talk did in person, so I’ve tweaked it to be a better reflection of my views.

    I agree: I tried to get across my initially naive views about those who disagreed with me. And yes, I’ve always wanted to hear more about how the people I mention in the talk saw me – I thought about doing some kind of interview, even. As you know many colleagues think it’s a waste of time or can even be actively damaging to talk to people who disagree on climate science or policy. I can’t speak for others, but I’ve personally learned a huge amount about why people do disagree and how to navigate those barriers to learn something from each other about how we come to particular views.


  7. ref your previous blog post:

    ’empathy’ ’emotion and ‘energy’ – Extinction R want to motivate 3.5% of society to push for societal change.They use fear, alarmism, misrepresenting the science, misunderstanding the science, to motivate/panic people to build towards this goal, to take action….

    Empathy goes out of the window, if you actually challenge that. You are met with just the usual intolerant, bigoted, self righteous political activism.. Anyone that speaks up to say, you’ve got this wrong, you are scaring people, will be shut down harshly.. Any scientist that gets involve with this lot are mad (imho) They will be ‘nice’ and on best behavior to important people (and that included scientists) When they receive pushback from wider society and they will. I wonder how they will react to people that are ‘getting in the way’ of ‘saving the planet’, always be wary of the self righteous they will tend justify anything in the name of a higher/’righteous’ cause. of course, anyone that questions, will be then looked at suspicious, motives questioned, morals criticized, censored and shut down, with phrases like ‘denier’ – in the pay’of, ‘in denial’

    It’s as if we have learned nothing over the last ten years.

    again – very different perspective of the same organisation. Why?

  8. 5 years ago, I described another possible future.
    The Science was Settled Enough – Watts Up With That

    This was an extended version of my contribution to an Open Univesity project, led by Dr Joe Smith

    My narrative appeared alongside George Marshall an activist and campaigner, ‘credited’ to have coined the phrase climate change denier, and the original Source of a who’se who of climate deniers and a Deniers – Hall of Shame. so brave move by Joe.

    There was also an Open University panel debate, with myself, Dr Tamsin Edwards, Dr Mark Brandon and Dr Warren Pearce, which I mentioned above.

    Mediating Change – An Inconvenient tweet.

    I guess that phone call of mine, initiating and attempting to bridge the ‘polar divide’, started a chain of events, that led to all of the above.

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