Joan Johnson
@jjohnso.bsky.social
Concerned about climate change impacts; mitigation and adaptation for future generations. Everything is interdependent and interconnected.
Reposted by Joan Johnson
"... in June 2025, the team concluded that the reduction in the ocean’s aragonite saturation state needed to be much lower than previously thought to keep the ocean healthy: around 10%, rather than 20%."
Researchers Say the Oceans Passed a Milestone for Acidification share.google/vxQKx69k7dnh...
Researchers Say the Oceans Passed a Milestone for Acidification share.google/vxQKx69k7dnh...
Researchers Say the Oceans Have Passed a Milestone for Acidification
[By Anna Napolitano]The past 12 months have been worrying for researchers who study the chemistry of the ocean. More and more evidence has been publi...
share.google
January 6, 2026 at 12:43 PM
"... in June 2025, the team concluded that the reduction in the ocean’s aragonite saturation state needed to be much lower than previously thought to keep the ocean healthy: around 10%, rather than 20%."
Researchers Say the Oceans Passed a Milestone for Acidification share.google/vxQKx69k7dnh...
Researchers Say the Oceans Passed a Milestone for Acidification share.google/vxQKx69k7dnh...
Reposted by Joan Johnson
In a recent breakthrough, scientists found that a deficiency of lithium in the brain causes dementia in mice. What does this mean for humans? 🧠
Lithium May Have A Role In Causing—And Treating—Alzheimer’s
This important breakthrough and other research projects have lost funding because of Trump’s cuts to the NIH.
buff.ly
January 6, 2026 at 1:08 PM
In a recent breakthrough, scientists found that a deficiency of lithium in the brain causes dementia in mice. What does this mean for humans? 🧠
Reposted by Joan Johnson
"Just beyond Argentina’s maritime frontier, hundreds of foreign vessels – known as the distant-water fishing fleet – are descending on Mile 201...to plunder its rich marine life. The fleet regularly becomes so big it can be seen from space"
share.google/9KFYEi46wH7V...
share.google/9KFYEi46wH7V...
‘Mad fishing’: the super-size fleet of squid catchers plundering the high seas
Every year a Chinese-dominated flotilla big enough to be seen from space pillages the rich marine life on Mile 201, a largely ungoverned part of the South Atlantic off Argentina
share.google
January 6, 2026 at 1:25 PM
"Just beyond Argentina’s maritime frontier, hundreds of foreign vessels – known as the distant-water fishing fleet – are descending on Mile 201...to plunder its rich marine life. The fleet regularly becomes so big it can be seen from space"
share.google/9KFYEi46wH7V...
share.google/9KFYEi46wH7V...
Reposted by Joan Johnson
Trump taking ‘drill, baby, drill’ plan to Venezuela ‘terrible’ for climate, experts warn: ‘Everybody loses’ if production supercharged in country with largest known oil reserves, critics say Donald Trump, by dramatically seizing Nicolás Maduro and claiming dominion over Venezuela’s vast o...
Trump taking ‘drill, baby, drill’ plan to Venezuela ‘terrible’ for climate, experts warn
Trump taking ‘drill, baby, drill’ plan to Venezuela ‘terrible’ for climate, experts warn: ‘Everybody loses’ if production supercharged in country with largest known oil reserves, critics say Donald Trump, by dramatically seizing Nicolás Maduro and claiming dominion over Venezuela’s vast o...
www.theguardian.com
January 6, 2026 at 1:38 PM
Trump taking ‘drill, baby, drill’ plan to Venezuela ‘terrible’ for climate, experts warn: ‘Everybody loses’ if production supercharged in country with largest known oil reserves, critics say Donald Trump, by dramatically seizing Nicolás Maduro and claiming dominion over Venezuela’s vast o...
Reposted by Joan Johnson
#Pacific #salmon #NOAA
Conflicting Ocean Indicators Suggest Moderate Returns of Pacific Salmon | NOAA Fisheries share.google/piyBvb8NjSSg...
Conflicting Ocean Indicators Suggest Moderate Returns of Pacific Salmon | NOAA Fisheries share.google/piyBvb8NjSSg...
Conflicting Ocean Indicators Suggest Moderate Returns of Pacific Salmon
Ocean data in 2025 points to roughly average conditions.
share.google
January 6, 2026 at 1:44 PM
#Pacific #salmon #NOAA
Conflicting Ocean Indicators Suggest Moderate Returns of Pacific Salmon | NOAA Fisheries share.google/piyBvb8NjSSg...
Conflicting Ocean Indicators Suggest Moderate Returns of Pacific Salmon | NOAA Fisheries share.google/piyBvb8NjSSg...
Reposted by Joan Johnson
My latest for @science.org—a major European effort to understand the environmental impacts of deep-sea mining begins this year. It aims to answer major open questions as the ISA finalizes regulations.
As deep-sea mining race ramps up, mission will assess whether ecosystems recover afterward
A new series of research cruises will study rare abyssal species in areas slated for mining
www.science.org
January 5, 2026 at 10:41 PM
My latest for @science.org—a major European effort to understand the environmental impacts of deep-sea mining begins this year. It aims to answer major open questions as the ISA finalizes regulations.
Reposted by Joan Johnson
Another blow for truth from @naomioreskes.bsky.social and colleagues. A great story from @hirokotabuchi.bsky.social www.nytimes.com/2026/01/02/c...
A Study Is Retracted, Renewing Concerns About the Weedkiller Roundup
www.nytimes.com
January 4, 2026 at 11:38 PM
Another blow for truth from @naomioreskes.bsky.social and colleagues. A great story from @hirokotabuchi.bsky.social www.nytimes.com/2026/01/02/c...
Reposted by Joan Johnson
A super-charged acceleration!
True: The climate has always changed.
Also True: Humans are now a force of nature, supercharging the natural warming rate.
True: The climate has always changed.
Also True: Humans are now a force of nature, supercharging the natural warming rate.
January 5, 2026 at 1:04 PM
A super-charged acceleration!
True: The climate has always changed.
Also True: Humans are now a force of nature, supercharging the natural warming rate.
True: The climate has always changed.
Also True: Humans are now a force of nature, supercharging the natural warming rate.
Reposted by Joan Johnson
The global temperature difference between an ice age and warm period is only ~6°C/ 10°F, but that change takes 10K+ years to happen - until now.
Over the past 150 years alone man has warmed Earth by 1.5°C/2.7°F - so about 1/4 of the amount which typically takes nature 10K+ years to accomplish…
4/
Over the past 150 years alone man has warmed Earth by 1.5°C/2.7°F - so about 1/4 of the amount which typically takes nature 10K+ years to accomplish…
4/
January 5, 2026 at 1:03 PM
The global temperature difference between an ice age and warm period is only ~6°C/ 10°F, but that change takes 10K+ years to happen - until now.
Over the past 150 years alone man has warmed Earth by 1.5°C/2.7°F - so about 1/4 of the amount which typically takes nature 10K+ years to accomplish…
4/
Over the past 150 years alone man has warmed Earth by 1.5°C/2.7°F - so about 1/4 of the amount which typically takes nature 10K+ years to accomplish…
4/
Reposted by Joan Johnson
Supercharging Nature’s Climate! “The climate has always changed” is a common talking point to distract from recent-more rapid manmade climate change. Here’s a quick/simple explainer on natural CC… 1/
January 5, 2026 at 1:01 PM
Supercharging Nature’s Climate! “The climate has always changed” is a common talking point to distract from recent-more rapid manmade climate change. Here’s a quick/simple explainer on natural CC… 1/
Reposted by Joan Johnson
“Since 2018, Venezuela has sold 100% of its oil exports to China, with transactions settled in yuan, not dollars. Moreover, Venezuela became an official BRICS+ partner nation in 2024, gaining access to the bloc’s alternative payment systems, development financing, and diplomatic protection.”
January 5, 2026 at 1:27 PM
“Since 2018, Venezuela has sold 100% of its oil exports to China, with transactions settled in yuan, not dollars. Moreover, Venezuela became an official BRICS+ partner nation in 2024, gaining access to the bloc’s alternative payment systems, development financing, and diplomatic protection.”
Reposted by Joan Johnson
I haven’t quite got my head around it yet, but this is the second time I’ve heard the argument that the US attacked Venezuela to ensure fossil energy is bought in dollars globally, and it seems very compelling.
And there it is! It had nothing to do with drugs. It's the BRICS system threatening the US Petro$ dominance.
"... since 2018, Venezuela has sold 100% of its oil exports to China, with transactions settled in yuan, not dollars. Moreover, Venezuela became an official BRICS+ partner nation in 2024.."
"... since 2018, Venezuela has sold 100% of its oil exports to China, with transactions settled in yuan, not dollars. Moreover, Venezuela became an official BRICS+ partner nation in 2024.."
The Real Reason Why the US Overthrew Venezuela
And why it all started in China in November 2025
kasperbenjamin.substack.com
January 5, 2026 at 1:20 PM
I haven’t quite got my head around it yet, but this is the second time I’ve heard the argument that the US attacked Venezuela to ensure fossil energy is bought in dollars globally, and it seems very compelling.
Reposted by Joan Johnson
After a strong start to winter, cold air will temporarily hit pause across Canada before the heart of winter returns to close the month.
https://ow.ly/1zF650XRv24
https://ow.ly/1zF650XRv24
Winter hits pause in Canada before striking back in January - The Weather Network
After a strong start to winter, cold air will temporarily hit pause across Canada before the heart of winter returns to close the month
ow.ly
January 4, 2026 at 1:00 PM
After a strong start to winter, cold air will temporarily hit pause across Canada before the heart of winter returns to close the month.
https://ow.ly/1zF650XRv24
https://ow.ly/1zF650XRv24
Reposted by Joan Johnson
And my free newsletter has a “what you can do” section every week!
Are we really doomed?
Is it too late to do anything about climate change?
www.talkingclimate.ca
January 2, 2026 at 4:07 AM
And my free newsletter has a “what you can do” section every week!
Reposted by Joan Johnson
And if you’re thinking, “I’m just one person, what difference can I make?” my pinned post has you covered:
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. 💚
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. 💚
January 2, 2026 at 4:05 AM
And if you’re thinking, “I’m just one person, what difference can I make?” my pinned post has you covered:
Reposted by Joan Johnson
When I decided to become a climate scientist, I thought I’d only need do it for a decade or so – because it was so obviously urgent, surely we would fix it by then? And then I would go back to studying galaxies.
Now, thirty years in, I have a different plan for what’s next ⬇️😄
Now, thirty years in, I have a different plan for what’s next ⬇️😄
January 2, 2026 at 3:51 AM
When I decided to become a climate scientist, I thought I’d only need do it for a decade or so – because it was so obviously urgent, surely we would fix it by then? And then I would go back to studying galaxies.
Now, thirty years in, I have a different plan for what’s next ⬇️😄
Now, thirty years in, I have a different plan for what’s next ⬇️😄
Reposted by Joan Johnson
Cop30, Trump and the fragile future of climate cooperation: In this week’s newsletter: From geopolitics to populism, multilateralism is under pressure – but climate action cannot succeed in a fractured world • Don’t get Down to Earth delivered to your inbox? Sign up here January might see...
Cop30, Trump and the fragile future of climate cooperation
Cop30, Trump and the fragile future of climate cooperation: In this week’s newsletter: From geopolitics to populism, multilateralism is under pressure – but climate action cannot succeed in a fractured world • Don’t get Down to Earth delivered to your inbox? Sign up here January might see...
www.theguardian.com
January 2, 2026 at 7:08 AM
Cop30, Trump and the fragile future of climate cooperation: In this week’s newsletter: From geopolitics to populism, multilateralism is under pressure – but climate action cannot succeed in a fractured world • Don’t get Down to Earth delivered to your inbox? Sign up here January might see...
Reposted by Joan Johnson
with over 100 CM in parts of the Balkans and 50cm+ over the Alps and central Italian mountain ranges. This is all due to unusually warm air over Greenland, called the Greenland Block. It will displace cold air South over Europe and make for a wintry stretch for ~10 days
January 2, 2026 at 1:50 PM
with over 100 CM in parts of the Balkans and 50cm+ over the Alps and central Italian mountain ranges. This is all due to unusually warm air over Greenland, called the Greenland Block. It will displace cold air South over Europe and make for a wintry stretch for ~10 days
Reposted by Joan Johnson
COLD & SNOWY EUROPE! Brutal cold across N. Europe (20°C below norm now) will overspread most of Europe soon, with cold dropping into the #Mediterranean, #Italy and the #Balkans. Over the next 10 days heavy snow will fall in spots… 1/
January 2, 2026 at 1:50 PM
COLD & SNOWY EUROPE! Brutal cold across N. Europe (20°C below norm now) will overspread most of Europe soon, with cold dropping into the #Mediterranean, #Italy and the #Balkans. Over the next 10 days heavy snow will fall in spots… 1/
Reposted by Joan Johnson
A little perspective…
Our Solar System is orbiting the center of our Galaxy at about 220 km/s so in 2025 we collectively traveled something like 7 billion kilometers across the Milky Way. Once in a while, when you have a moment, it’s worthwhile to take a look around, see where you are, and appreciate how far you’ve come.
January 1, 2026 at 5:32 AM
A little perspective…
A little perspective…
Our Solar System is orbiting the center of our Galaxy at about 220 km/s so in 2025 we collectively traveled something like 7 billion kilometers across the Milky Way. Once in a while, when you have a moment, it’s worthwhile to take a look around, see where you are, and appreciate how far you’ve come.
January 1, 2026 at 2:08 PM
Reposted by Joan Johnson
Arctic sea-ice extent in 2025 was record low in
January 🥇
February 🥇
March 🥇
and December 🥇
and the second lowest in
June 🥈
November 🥈
and YEARLY 🥈
No blue cells in any month since 2013 ...
January 🥇
February 🥇
March 🥇
and December 🥇
and the second lowest in
June 🥈
November 🥈
and YEARLY 🥈
No blue cells in any month since 2013 ...
January 1, 2026 at 11:42 AM
Arctic sea-ice extent in 2025 was record low in
January 🥇
February 🥇
March 🥇
and December 🥇
and the second lowest in
June 🥈
November 🥈
and YEARLY 🥈
No blue cells in any month since 2013 ...
January 🥇
February 🥇
March 🥇
and December 🥇
and the second lowest in
June 🥈
November 🥈
and YEARLY 🥈
No blue cells in any month since 2013 ...
Reposted by Joan Johnson
From rent to utility bills: the politicians and advocates making climate policy part of the affordability agenda: As the Trump administration derides climate policy as a ‘scam’, emissions-cutting measures are gaining popularity A group of progressive politicians and advocates are reframin...
From rent to utility bills: the politicians and advocates making climate policy part of the affordability agenda
From rent to utility bills: the politicians and advocates making climate policy part of the affordability agenda: As the Trump administration derides climate policy as a ‘scam’, emissions-cutting measures are gaining popularity A group of progressive politicians and advocates are reframin...
www.theguardian.com
January 1, 2026 at 12:38 PM
From rent to utility bills: the politicians and advocates making climate policy part of the affordability agenda: As the Trump administration derides climate policy as a ‘scam’, emissions-cutting measures are gaining popularity A group of progressive politicians and advocates are reframin...
Reposted by Joan Johnson
The forces behind the dangerous anti-science movement | I discussed my book w/ @peterhotezmdphd.bsky.social, #ScienceUnderSiege, with @ethanelkind.bsky.social of @npr.org / @kalwradio.bsky.social #YourCall radio: www.kalw.org/show/your-ca...
The forces behind the dangerous anti-science movement
In their new book, "Science Under Siege," Peter Hotez and Michael Mann reveal the main forces threatening science: plutocrats, pros, petrostates, phonies, and the press.
www.kalw.org
December 30, 2025 at 4:18 PM
The forces behind the dangerous anti-science movement | I discussed my book w/ @peterhotezmdphd.bsky.social, #ScienceUnderSiege, with @ethanelkind.bsky.social of @npr.org / @kalwradio.bsky.social #YourCall radio: www.kalw.org/show/your-ca...
Reposted by Joan Johnson
Championing Canada’s transition to electric vehicles was a major focus for #PembinaIn2025.
Policies that make EVs affordable & accessible for Canadians are key to accelerating adoption and keeping Canada competitive. ➡️ buff.ly/nh5Zgpy
Policies that make EVs affordable & accessible for Canadians are key to accelerating adoption and keeping Canada competitive. ➡️ buff.ly/nh5Zgpy
December 31, 2025 at 2:01 PM
Championing Canada’s transition to electric vehicles was a major focus for #PembinaIn2025.
Policies that make EVs affordable & accessible for Canadians are key to accelerating adoption and keeping Canada competitive. ➡️ buff.ly/nh5Zgpy
Policies that make EVs affordable & accessible for Canadians are key to accelerating adoption and keeping Canada competitive. ➡️ buff.ly/nh5Zgpy