Joined April 2009
- Tweets 68,313
- Following 4,469
- Followers 222,126
- Likes 69,552
4,351 Photos and videos
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27 Mar 2024
I don't use X very much any more, but I'd love to see you elsewhere!
For the short & up to date content I used to provide here, see Threads & Bluesky.
For longer commentaries, see LinkedIn & my newsletter.
And for the fun stuff, check out IG Pinterest.
All links below ⬇️
29 Mar 2023
Looking for more from me than tweets? I regularly share unique content on a dozen other online platforms...and you won't see most of it on Twitter. Browse this thread for direct links and dive in!
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Jun 11
Can we actually fix climate change? And if so -- how?
This week, I handed Talking Climate over to climate scientist and @ProjectDrawdown executive Jon Foley.
His message is simple: yes, we can.
talkingclimate.ca/p/climate-…
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Jun 11
From attacks on climate science to the spread of disinformation, the climate conversation has become increasingly challenging. Yet around the world, meaningful climate action continues to move forward.
On June 16 at 2 PM ET, I'm joining Jonathan Foley, Executive Director of @ProjectDrawdown, for a discussion about where climate action goes from here.
We'll explore common misconceptions about climate solutions, why communication matters as much as ever, and how we can connect across differences while staying grounded in science and empathy.
If you've been wondering how to stay engaged, effective, and hopeful in this moment, we'd love to have you join us: us02web.zoom.us/webinar/regi…
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Two years after she first guest edited Talking Climate, I sat down with climate scientist Dr. Kim Cobb to ask a simple question: What's the latest?
The answer reminded me that some of the most encouraging climate progress we're seeing is happening at the same time as some of the biggest risks we face.
❤️ What gives her hope: Clean energy. Around the world, renewable energy is being deployed at a pace that even many climate scientists didn't expect to see this soon.
😱 What keeps her up at night: Climate tipping points. Earth's history shows us that climate systems don't always change gradually—and some changes can accelerate much faster than we expect.
🤝 How do we move forward: Talk about it. Research shows that people are more likely to take action when they understand the risks, see solutions happening around them, and know that others care too.
Watch our full conversation on Substack or Patreon, and let me know: What climate solution gives you hope right now?
talkingclimate.ca/p/kimcobb
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Prof. Katharine Hayhoe retweeted
“The number one source of uncertainty in the future is us. Our choices are the number one source of uncertainty.”
On our podcast Shocked, @AmyAHarder talks with @KHayhoe about how our choices shape climate outcomes: climate.uchicago.edu/insight…
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Prof. Katharine Hayhoe retweeted
The climate crisis is real. So is the progress being made to tackle it.
For #WorldEnvironmentDay, we sat down with two climate scientists to separate fear from fact & unpack the latest science.
The world is moving in the right direction, but we need faster action #NowForClimate: bit.ly/43JSHCM
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What do a giant new marine sanctuary, the loss of climate journalism, and plug-in solar panels for apartment balconies have in common?
They all show how much the future depends on the choices we make today.
🐠 Good News: Papua New Guinea just created the largest marine protected area in its history, safeguarding a stretch of ocean nearly the size of the UK in one of the most biodiverse marine regions on Earth.
😱 Not-So-Good News: NPR's climate desk has been dismantled, and many other major news organizations are doing away with climate reporting altogether. But the climate crisis doesn't go away when we stop covering it.
😎 What You Can Do: If you rent or live in an apartment, check out "balcony solar." And if local regulations are standing in the way? Use your voice to advocate for change. That's how the system changes.
Read more here and, as always, don't forget to use what you learn to start a conversation today! talkingclimate.ca/p/an-ocean…
ALT Image of an ocean wave. Text that reads: "A huge new ocean refuge, climate coverage cuts, and accessible home solar"
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May 30
I’m a climate scientist. Let me fix this headline.
“Nearly a century ago, scientists showed that burning fossil fuels warms the planet.*
Today, we know human emissions account for over 100% of the warming.**
Yet dark money and disinformation still work to keep Americans addicted to fossil fuels.”***
* in 1937, Guy Callendar published a paper showing that the world had already warmed over the last 50 years due to human emissions what he called “carbonic acid“ – what we now call CO2 – from burning fossil fuels
** If you are wondering, “how could humans be causing more than 100% of the warming?”
— it’s because, according to natural factors, the earth should be cooling right now.
So our emissions are offsetting that cooling AND causing all of the observed warming.
*** For more on the well funded disinformation campaign, read or watch Merchants of Doubt and The Petroleum Papers
Most Americans Aren't Convinced Humans Are Causing Climate Change, New Data Shows
go.forbes.com/h-CoYw
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May 30
If you want my clear, science-based take on what’s happening, why it matters, and - most importantly - what we can do about it, check out my free Talking Climate newsletter.
Why? Because understanding is the first step. Action is the next.
talkingclimate.ca/p/are-we-r…
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May 28
The world is no longer headed for the most catastrophic futures climate scenarios once warned about: but not because the science was wrong. It’s because people listened, and acted.
That is genuinely good news; but the new scenarios also tell us this:
📈 Not-so-good news - The new climate scenarios cover a narrower future, illustrating how human choices over the last 20 year have closed doors. While highest warming pathways are now less likely thanks to climate action over the last decade, our chances of staying below 1.5C without overshoot are now gone. And in a future where "every bit of warming matters" that means that some previously avoidable suffering will now occur.
🇺🇸 Good news - NPR’s Climate Solutions Week highlights local climate action across the U.S., from tribal wildfire resilience plans in Montana to geothermal heating in Denver and community solar in Portland. Climate solutions are still happening, all around us!
✈️ What you can do - If you’re travelling this summer, fly nonstop when possible, fly economy, take the train if you can, or simply slow down and stay longer in one place. Climate action isn’t only about technology. It’s about the choices we have every day - and share with others to make them contagious!
talkingclimate.ca/p/local-cl…
ALT Image of people on a road trip. Text that reads: "NPR's Climate Solutions Week, narrowing climate futures, and how to travel smart this summer"
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Prof. Katharine Hayhoe retweeted
May 25
I've got to say that I'm really disappointed in the recent discourse surrounding the RCP8.5 scenario. The lack of context and understanding is something I expected from the usual suspects, but it's frustrating to see such bad takes from people and outlets who should know better.
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Prof. Katharine Hayhoe retweeted
9 Dec 2019
There is an endless twitter argument going on right now over the perennial question: "which future scenario is the correct one?" As the lead author of the US Natl Climate Asst chapter on scenarios, I have an informed opinion: NONE. science2017.globalchange.gov…
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May 26
This article says climate change is “believed to have played a role” in the UK's extreme heat this week.
As a climate scientist, let me fact-check that.
First, climate change is not a religion. No belief is required. It is about evidence.
And the evidence has been crystal clear for more than two decades: climate change is making heat waves hotter, longer, more frequent and more dangerous.
In fact, science has advanced far beyond saying climate change merely “played a role.” Today, we can quantify how much more likely and how much hotter climate change made a specific event.
Here's the bottom line:
Climate is changing. Humans are responsible. And we are experiencing the impacts now. That’s the bad news.
The good news is that solutions already exist, and the majority of people care - 89%, around the world!
But meaningful action depends on helping people understand not just what is happening: we need to know how it affects our lives (this heat wave being example A today) and what we can do about it.
That’s the opportunity this reporting missed.
bbc.com/news/articles/c8xwwp…
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May 26
If you would like more accurate, up to date information on climate change, I recommend following me on LinkedIn or subscribing to my free weekly Talking Climate newsletter here: talkingclimate.ca/
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May 26
X's algorithm changes increased my trolling on this platform by 10-15x and dropped my reach by about the same.
So when I post here - which is rarely - I only allow accounts I follow to reply.
So what do the trolls do? They search for posts I've shared and troll those instead.
May 26
This article says climate change is “believed to have played a role” in the UK's extreme heat this week.
As a climate scientist, let me fact-check that.
First, climate change is not a religion. No belief is required. It is about evidence.
And the evidence has been crystal clear for more than two decades: climate change is making heat waves hotter, longer, more frequent and more dangerous.
In fact, science has advanced far beyond saying climate change merely “played a role.” Today, we can quantify how much more likely and how much hotter climate change made a specific event.
Here's the bottom line:
Climate is changing. Humans are responsible. And we are experiencing the impacts now. That’s the bad news.
The good news is that solutions already exist, and the majority of people care - 89%, around the world!
But meaningful action depends on helping people understand not just what is happening: we need to know how it affects our lives (this heat wave being example A today) and what we can do about it.
That’s the opportunity this reporting missed.
bbc.com/news/articles/c8xwwp…
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May 20
One of the biggest challenges in climate action is imagining what a better future could actually look like: especially when solutions are so often framed as sacrifices that require loss, instead of opportunities to benefit from. This week's good news and what-to-do takes those on directly --
🏡 Good news: A new net-zero community in Ontario combines climate-friendly homes with walkable streets, hills and lakes, clean energy, and cold-climate heat pumps.
🚨 Not-so-good news: A new study from Houston found that climate disasters are making already dangerous prison conditions even worse, with extreme heat, flooding, and loss of basic necessities during storms.
🚶♀️What you can do: Try taking a “climate walk” through your own neighbourhood this week. What makes it livable? What could make it better? Climate solutions become much more tangible once we can actually imagine them around us! talkingclimate.ca/p/would-yo…
ALT Image of a neighborhood. Text that reads: "A Canadian net-zero community, higher climate risk for prisoners, and urban future walks."
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Prof. Katharine Hayhoe retweeted
Thanks @KHayhoe for recommending this presentation on the Fossil Fuel Treaty by @Tzeporah: The bad math of the fossil fuel industry | TED Countdown #climate youtu.be/Cz6pXdA4fxQ?si=ZwIY… via @YouTube
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May 13
What does it actually look like to move beyond fossil fuels — not someday, but now?
🌍 Good news: In Colombia, 57 countries gathered last week for the first-ever global conference dedicated to transitioning away from fossil fuels. Together, they're creating practical roadmaps for reducing fossil fuel use.
🌊 Not-so-good news: A new study warns that much of coastal Louisiana may eventually be lost to rising seas, erosion, wetland loss, and sinking land. New Orleans could become an island in the Gulf.
♻️ Inspiration: In Louisiana, Glass Half Full is turning recycled glass into sand and gravel for coastal restoration - reminding us that solutions don’t have to start big to matter, and that we can feed two birds with one scone!
(yes, you see what I did there)
Read more in this week’s Talking Climate and don't forget to share what you learn, to make change contagious!
talkingclimate.ca/p/introduc…
ALT Image of glass for recycling. Text that reads: "A new climate coalition forms, New Orleans's future is underwater, and recycling that gives back"
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Prof. Katharine Hayhoe retweeted
May 13
The Briefing: Ukraine seeks an airport ceasefire after its three-day truce with Russia ends. Then: @KHayhoe on how climate scientists maintain their optimism during the Trump administration. Plus: Tokyo Music Hour and Kyoto’s music scene with @nickluscombe monocle.com/radio/shows/the-…
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