Katharine Hayhoe
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Katharine Hayhoe
@katharinehayhoe.com

climate scientist
posts 100% my own
🇨🇦 is my home

distinguished professor & chair, Texas Tech
chief scientist, The Nature Conservancy
board member, Smithsonian NMNH
alum, UToronto and UIUC
author, Saving Us

Katharine Anne Scott Hayhoe is a Canadian atmospheric scientist. She is a Paul Whitfield Horn Distinguished Professor and an Endowed Chair in Public Policy and Public Law at the Texas Tech University Department of Political Science. In 2021, Hayhoe joined the Nature Conservancy as Chief Scientist. .. more

Environmental science 57%
Geography 18%
Pinned
I’m a scientist who studies how climate change impacts our lives and the places we love.

Most of us are worried, but many feel stuck on what to do. If that's the way you feel, check out this list below!

We can’t fix it alone, but I know we can together. 💚

Reposted by Katharine Hayhoe

Even after the news last week, we are still doing great research here at NCAR. My group has released a new paper, led by John Schreck, on arxiv about an efficient method for generating calibrated AI weather ensembles with reproducible scale specific perturbations. arxiv.org/abs/2512.18815
Controllable Probabilistic Forecasting with Stochastic Decomposition Layers
AI weather prediction ensembles with latent noise injection and optimized with the continuous ranked probability score (CRPS) have produced both accurate and well-calibrated predictions with far less ...
arxiv.org

Thank you Marshall! Merry Christmas ☺️
Some thoughts to prepare Scientists for future headwinds in 2026...Mentions my friend Katharine Hayhoe

Read at:
www.forbes.com/sites/marsha...

--

I do too! 😍

See starter packs 1-8 below!
Did you know climate work attracts Katharines? 116 of us on Bluesky alone!

(This pack includes all creative spelling variations although the original has two A’s, deriving from the Greek καθαρός 😊)

This is Day 8 of my 20 days of Climate Starter Packs. For the previous entries please see below ⬇️

Reposted by Katharine Hayhoe

Eos @eos.org · 2d
We already knew that climate change is likely making tropical cyclones stronger. But new research suggests warming could also make the precursors to these storms more intense.
Warming May Make Tropical Cyclone “Seeds” Riskier for Africa - Eos
Intensified hurricane precursors may linger longer over the continent, worsening extreme flooding hazards.
eos.org

Day 9 of my 20 days of climate starter packs features professionals who study, work, or write at the intersection of climate, pollution, and health-related issues, from extreme heat to infectious diseases. (not mental health, that's another pack - coming tomorrow)

See below for previous days!

Not for climate science. 🙄

PS. If you want snow right now go to Lake Louise or Revelstoke. 5 metres of snow so far this year. Climate change gives you a few bigger wins along with the terrible losses … but the odds aren’t great.

😄

Reposted by Mónica Medina

I’ve watched at least two dozen reels, showing the terrible snow conditions in Colorado and Europe right now.

Guess how many of those videos mentioned climate change? And how many mentioned chemtrails?

The same number. ONE. 😱
The most important thing you can do to fight climate change: talk about it
How do you talk to someone who doesn't believe in climate change? Not by rehashing the same data and facts we've been discussing for years, says climate scientist Katharine Hayhoe. In this inspiring, ...
www.ted.com

Did I make the family dress up in historical outfits and go dancing at Mount Vernon tonight as our Christmas outing? Why yes I did and a good time was had by all 😄

Added!

I love it! 🥰

Obviously! 😄
“Last year more than 40% of electricity generation on Christmas Day came from renewables. It stood at 1.7% in 2009” #GreenSky #GreenShoots
“An extra 2 gigawatts of #wind and 3GW of #solar power came on to the network in 2025” @katharinehayhoe.com @350.org

www.theguardian.com/environment/...
This year’s Christmas could be Britain’s greenest yet, energy operator says
System operator Neso predicts lowest carbon intensity ever on Christmas Day after new wind and solar power come online
www.theguardian.com

Thank you for this. A few external thoughts here. bsky.app/profile/kath...
Since this op-ed specifically cites the example of other countries let me remind you that Canadian liberals' decades-long attempt to reconcile with the oil and gas industry and the province of Alberta have yielded no benefits for climate whatsoever and I'm not aware of any economic benefits either.
Opinion | Obama Supported It. The Left in Canada and Norway Does. Why Don’t Democrats?
www.nytimes.com

😄😄😄

Maybe the last section in my newsletter this week will help?
3 creative ways to use green energy
Green energy innovations, emergency briefing sounds alarm, and how to help with holiday travel
www.talkingclimate.ca

See below for the first seven days...and Katharines, if you are suddenly followed by a flood of people please do not feel they are weirdos + block because they are following so many other K's; they are just subscribers to this starter pack! (that has happened in the past 😳)

bsky.app/profile/kath...
One the first set climate research centers, labs & groups joined Bluesky, the next group came fast: so I needed a Part 2.

Here's the 2nd list of official organizations who made the move to bluer skies. Choose a few to follow or click the whole list!

Day 7 of my 20 Days of Climate Starter Packs.

welcome, added! :)

Reposted by Stefan Rahmstorf

Did you know climate work attracts Katharines? 116 of us on Bluesky alone!

(This pack includes all creative spelling variations although the original has two A’s, deriving from the Greek καθαρός 😊)

This is Day 8 of my 20 days of Climate Starter Packs. For the previous entries please see below ⬇️
This Yglesias piece in the NYT is horrifically bad. Almost every "fact" it cites is provably false. At best it is cocktail party banter from a pundit who knows nothing of energy. At worst, it was cut/paste from oil industry talking points. So, a rebuttal: www.nytimes.com/2025/12/18/o...
Opinion | Obama Supported It. The Left in Canada and Norway Does. Why Don’t Democrats?
www.nytimes.com

It took a while for the centers, labs & groups bringing together scientists, researchers, and communicators on climate to realize Bluesky was a thing. But once they did, they arrived in droves.

Here are the first 100 early adopters. Give ’em a follow!

Day 6 of my 20 Days of Climate Starter Packs.

One the first set climate research centers, labs & groups joined Bluesky, the next group came fast: so I needed a Part 2.

Here's the 2nd list of official organizations who made the move to bluer skies. Choose a few to follow or click the whole list!

Day 7 of my 20 Days of Climate Starter Packs.

Reposted by Katharine Hayhoe

Join this session as panelists discuss how linking the perspectives and values of science and faith communities can create mutual benefits.

Discover ways to bring these groups together and enhance communication and understanding of weather and climate science.

More: https://bit.ly/4oIZg0v #AMS2026

How fortunate 😄

I talk about that here!

youtu.be/aYczISW9RJU?...
We’re in an ice age. The sun is cooling. So what’s heating the planet?
YouTube video by Talking Climate with Katharine Hayhoe
youtu.be

This is fascinating - and sad.

Only 37% of us think it's too late to act? That is a lie from the pit of the tar sands, my fellow Canadians!

As Christiana Figueres says, "We are only as doomed as we believe ourselves to be."

This is how we can change our future: bsky.app/profile/kath...
11-12% of Canadians identify as climate doomers, meaning they think climate action no longer matters and it is too late to make a difference. When you look at breakdowns by social media use, up to 37% of Bluesky users are climate doomers.