Here are the big takeaways from the @IPCC_CH Synthesis Report released today.

First, climate change has already caused widespread and substantial losses to almost every aspect of human life on this planet, and the impacts on future generations depend on the choices we make NOW. IPCC SYR AR6 figure 1
Second, every bit of warming matters. The warmer the planet gets, the more widespread and pronounced the changes in both average climate and climate and weather extremes become. IPCC SYR AR6 Figure 2
Third, the impacts are very serious: they directly affect our health, our food sources, our water and more. IPCC Synthesis Report AR6 Figure 3
Fourth, the percentage of animal species exposed to potentially dangerous conditions increases significantly the faster the world warms. In general, ocean species like coral and tropical species are most at risk. IPCC Synthesis Report AR6 Figure 3
The "burning embers" diagram originally conceptualized by Steve Schneider and others so long ago has been updated to show even higher risks at lower temperature thresholds. To be honest, not unexpected. The "experiment" we're conducting with our planet is unprecedented. IPCC Synthesis Report AR6 Figure 4
So given this dire news, surely we are well on our way to cutting our carbon emissions, no?

No.

The synthesis report is crystal clear: we are not doing nearly enough to avoid dangerous impacts, let alone achieve the targets of the Paris Agreement. IPCC Synthesis Report AR6 Figure 5
Our choices matter and the faster we act, the better off we will all be - all of us who call this planet home. IPCC Synthesis Report AR6 Figure 6
Finally, so many of the solutions are (a) already available today, and (b) benefit us in so many ways -- addressing health, equity, justice, and even economic concerns while increasing resilience and accelerating the transition to a clean energy future. IPCC Synthesis Report AR6 Figure 7
Climate change stands between us and a better future. Many of the solutions are already at hand. At this point, the only question is: what are we waiting for? the co-benefits of climate solutions
* For individuals, the answer is often "because I don't know what to do." So that's why I gave this TED talk, helped design this tool, and wrote this book. Check them out!
1/ ted.com/talks/katharin…
2/ dontlookup.count-us-in.com
3/ simonandschuster.com/books/Saving-U…
** Here's the website where you can access all the figures and the report itself: ipcc.ch/report/ar6/syr…

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More from @KHayhoe

Mar 19
The latest @IPCC_CH 6th Asst Synthesis Report comes out tomorrow; but after three decades of these assessments, it's already clear that --
Climate is changing
Humans are responsible
The impacts are serious
We aren't doing enough to prevent them
And our future is in our hands.
How would Shakespeare say this?

Hark! The climate, she doth change,
And for this, we do bear the blame.
The impacts grave, they do ensue,
Yet we fail to do what we must do.
Our future rests within our hands,
Pray, let us act, and make amends.
What about Martin Luther King Jr?

We must recognize the serious impacts that are already occurring, and take action to prevent further harm. Let us not be satisfied with complacency, but rather let us rise to the challenge and take responsibility for our future.
Read 6 tweets
Mar 12
Climate change is causing atmospheric rivers to become stronger and more hazardous. This is contributing to the devastating flooding in California this year. Source: science2017.globalchange.gov/chapter/9/
It is also making heatwaves stronger and more frequent; droughts longer and more intense; wildfires burn greater area, heavy precipitation increase, and hurricanes intensify faster and dump more rain. The more the world warms, the worse they will be.
Today, we can even put a number on how much worse climate change made a given event: 40% more rain, or 150 times more likely, or quadruple the economic damages. nytimes.com/2021/08/17/opi…
Read 4 tweets
Jan 9
I'm updating the video viewing lists for my undergrad class with these new releases! A short thread.

First, @climatehuman responds to great Twitter questions on the science and impacts of climate change
Then, @clequere confesses how many of us feel when we see a new climate extreme record being broken, especially when we predicted it would happen
Next, @profadamsobel reflects on the confluence between science and politics in the US and the social responsibility of climate scientists (something I think about a lot)
Read 6 tweets
Dec 15, 2022
Climate change is real, it’s human-caused, its impacts are serious … and there are solutions if we act now.
If you are reading this and have questions about the science, please review this thread and all associated resources.
If you are reading this and have questions about solutions, please see this thread:
Read 7 tweets
Dec 1, 2022
Many have been noticing decreases in followers the last few weeks. My list of 'scientists who do climate' has shrunk by 2% & my followers by about the same. So the most likely conclusion, at least for me, is that most of the decrease is due to people closing their accounts.
And one more data point - I have gained about a third the number of followers on Mastodon as I've lost on twitter. @kathhayhoe@climatejustice.rocks
Read 4 tweets
Nov 23, 2022
As you've probably noticed, climate discussions here on Twitter have been down significantly despite #COP27. I took a look at my monthly stats since 2021 and mentions over the last week, and here's what I see. @RARohde what's your take?
Notice the sharp drop-off in profile visits and new followers that occurred in October BEFORE it was bought out. At the time, I believed my follower drop was due to a semi-regular bot purge, but the profile visits number doesn't fit that hypothesis.
Impressions per tweet dropped very quickly after the buy-out, but the drop in mentions lagged. My 12-month average is 135 mentions per day, and this number was maintained until a week ago, when it dropped like a rock (despite being the final days of #COP27).
Read 4 tweets

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