Paul Macdonald
@paulmac.bsky.social
Fighting for climate action, and challenging anti-science propaganda, disinformation, and misinformation.
Pinned
Paul Macdonald
@paulmac.bsky.social
· Nov 15
A few years ago, prior to Australia’s ‘Black Summer’, I began capturing extreme events as I became aware of them escalating to a frequency of becoming annual events - some type of disaster of unprecedented scale occurring somewhere where such an event was previously unheard of. 🧵
In the past few days there has been serious to extreme flooding in Morocco, Greece, USA, Indonesia, Brazil, Argentina, France, South Africa, Israel,…
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
December 25, 2025 at 4:46 AM
In the past few days there has been serious to extreme flooding in Morocco, Greece, USA, Indonesia, Brazil, Argentina, France, South Africa, Israel,…
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
In the past few days there has been serious to extreme flooding in Morocco, Greece, USA, Indonesia, Brazil, Argentina, France, South Africa,…
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
December 25, 2025 at 12:55 AM
In the past few days there has been serious to extreme flooding in Morocco, Greece, USA, Indonesia, Brazil, Argentina, France, South Africa,…
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
All I want for Christmas is…
A GLOBAL MORATORIUM ON FOSSIL FUEL EXPANSION.
December 24, 2025 at 1:30 PM
When you vote, you’ll get to choose, as we leave the Holocene, speeding blindfolded, deep into the Anthropocene, which of these former geological epochs you’d most enjoy inflicting upon your children.
Vote wisely.
#FossilFuelPollution
#AnthropogenicGlobalWarming
Vote wisely.
#FossilFuelPollution
#AnthropogenicGlobalWarming
December 23, 2025 at 3:20 PM
When you vote, you’ll get to choose, as we leave the Holocene, speeding blindfolded, deep into the Anthropocene, which of these former geological epochs you’d most enjoy inflicting upon your children.
Vote wisely.
#FossilFuelPollution
#AnthropogenicGlobalWarming
Vote wisely.
#FossilFuelPollution
#AnthropogenicGlobalWarming
Reposted by Paul Macdonald
POV: Big Oil explains the weather they caused.
December 12, 2025 at 10:01 PM
POV: Big Oil explains the weather they caused.
December 20, 2025 at 2:41 PM
December 20, 2025 at 11:50 AM
Reposted by Paul Macdonald
A different kind of Faustian Bargain...
December 18, 2025 at 4:17 PM
A different kind of Faustian Bargain...
Reposted by Paul Macdonald
Reposted by Paul Macdonald
A sobering take on what a slew of new reports say about how the world will look under 2-3°C+ of warming. W/ @laurapaddison.bsky.social & insights from @drkatemarvel.bsky.social, @kimcobb.bsky.social, @weatherwest.bsky.social & others. www.cnn.com/2025/11/12/c... (For CNN subscribers.)
New reports paint picture of an ‘extremely dangerous’ future with warming expected to blow past key limit | CNN
Melting ice sheets. Massive flooding. Dead coral reefs. Humanity is careening toward an untenable future as global temperatures rise, scientists warn
www.cnn.com
November 12, 2025 at 3:42 PM
A sobering take on what a slew of new reports say about how the world will look under 2-3°C+ of warming. W/ @laurapaddison.bsky.social & insights from @drkatemarvel.bsky.social, @kimcobb.bsky.social, @weatherwest.bsky.social & others. www.cnn.com/2025/11/12/c... (For CNN subscribers.)
December 17, 2025 at 3:09 PM
Reposted by Paul Macdonald
The annual Arctic Report Card is now out for 2025. It discusses recent changes in the #Arctic, extreme events, and broader human/environmental impacts.
This is the 20th anniversary edition. 20 years of rapid change.
+ Report arctic.noaa.gov/report-card/...
+ Summary arctic.noaa.gov/report-card/...
This is the 20th anniversary edition. 20 years of rapid change.
+ Report arctic.noaa.gov/report-card/...
+ Summary arctic.noaa.gov/report-card/...
December 17, 2025 at 1:06 PM
The annual Arctic Report Card is now out for 2025. It discusses recent changes in the #Arctic, extreme events, and broader human/environmental impacts.
This is the 20th anniversary edition. 20 years of rapid change.
+ Report arctic.noaa.gov/report-card/...
+ Summary arctic.noaa.gov/report-card/...
This is the 20th anniversary edition. 20 years of rapid change.
+ Report arctic.noaa.gov/report-card/...
+ Summary arctic.noaa.gov/report-card/...
When people (mainly paid trolls and bots, and their gullible and wilfully ignorant victims) try to tell you “bUt aNtaRcTicAs grOWinG!”, send them to @zacklabe.com
zacklabe.com/wp-content/u...
zacklabe.com/arctic-sea-i...
www.facebook.com/share/v/1ARU...
bsky.app/profile/paul...
zacklabe.com/wp-content/u...
zacklabe.com/arctic-sea-i...
www.facebook.com/share/v/1ARU...
bsky.app/profile/paul...
December 16, 2025 at 2:18 PM
When people (mainly paid trolls and bots, and their gullible and wilfully ignorant victims) try to tell you “bUt aNtaRcTicAs grOWinG!”, send them to @zacklabe.com
zacklabe.com/wp-content/u...
zacklabe.com/arctic-sea-i...
www.facebook.com/share/v/1ARU...
bsky.app/profile/paul...
zacklabe.com/wp-content/u...
zacklabe.com/arctic-sea-i...
www.facebook.com/share/v/1ARU...
bsky.app/profile/paul...
Reposted by Paul Macdonald
"If you don’t worry about it now, it’s too late later on."
"We are passing on extremely grave problems for our children when the time to solve the problems… is now."
"The overall picture is, I think, quite clear and quite widely understood and accepted."
- Carl Sagan to congress, December 10, 1985
"We are passing on extremely grave problems for our children when the time to solve the problems… is now."
"The overall picture is, I think, quite clear and quite widely understood and accepted."
- Carl Sagan to congress, December 10, 1985
December 10, 2025 at 5:50 PM
"If you don’t worry about it now, it’s too late later on."
"We are passing on extremely grave problems for our children when the time to solve the problems… is now."
"The overall picture is, I think, quite clear and quite widely understood and accepted."
- Carl Sagan to congress, December 10, 1985
"We are passing on extremely grave problems for our children when the time to solve the problems… is now."
"The overall picture is, I think, quite clear and quite widely understood and accepted."
- Carl Sagan to congress, December 10, 1985
Reposted by Paul Macdonald
What did Sagan propose?
- End fossil fuel subsidies. We didn't. Americans still pay $10-50B/yr to fossil fuels and hundreds of billions indirectly.
- Build solar. We did… starting 25 years later.
40 years ago we knew the science knew what to do. Big Oil's lies cost us decades of damage and time.
- End fossil fuel subsidies. We didn't. Americans still pay $10-50B/yr to fossil fuels and hundreds of billions indirectly.
- Build solar. We did… starting 25 years later.
40 years ago we knew the science knew what to do. Big Oil's lies cost us decades of damage and time.
December 10, 2025 at 6:08 PM
What did Sagan propose?
- End fossil fuel subsidies. We didn't. Americans still pay $10-50B/yr to fossil fuels and hundreds of billions indirectly.
- Build solar. We did… starting 25 years later.
40 years ago we knew the science knew what to do. Big Oil's lies cost us decades of damage and time.
- End fossil fuel subsidies. We didn't. Americans still pay $10-50B/yr to fossil fuels and hundreds of billions indirectly.
- Build solar. We did… starting 25 years later.
40 years ago we knew the science knew what to do. Big Oil's lies cost us decades of damage and time.
Reposted by Paul Macdonald
The EPA website showing this insightful 800,000 year methane concentration graph has been taken offline...
Reality doesn't change by pretending it isn't real.
Reality doesn't change by pretending it isn't real.
December 7, 2025 at 2:53 PM
The EPA website showing this insightful 800,000 year methane concentration graph has been taken offline...
Reality doesn't change by pretending it isn't real.
Reality doesn't change by pretending it isn't real.
Reposted by Paul Macdonald
I'm dumbfounded every time I see this methane graph
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
March 9, 2025 at 10:52 PM
I'm dumbfounded every time I see this methane graph
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
December 8, 2025 at 4:08 PM
Reposted by Paul Macdonald
This is such a great visualization of the carbon cycle and of how humanity has completely altered it within a geological instant, by @rarohde.bsky.social:
December 7, 2025 at 11:17 PM
This is such a great visualization of the carbon cycle and of how humanity has completely altered it within a geological instant, by @rarohde.bsky.social:
Reposted by Paul Macdonald
Welcome to the future we fought for five decades to avoid.
open.substack.com/pub/alexstef...
open.substack.com/pub/alexstef...
Welcome to the future we fought for five decades to avoid.
Massive climate discontinuity means we no longer live in a world that can solve its most pressing problems in an orderly way.
open.substack.com
December 4, 2025 at 1:45 AM
Welcome to the future we fought for five decades to avoid.
open.substack.com/pub/alexstef...
open.substack.com/pub/alexstef...
December 4, 2025 at 1:35 AM
“…tropical cyclones such as Senyar, …are rare so close to the Equator.
It's not something that we see very often and it means the impacts are magnified because local communities have got no experience in this,”
It's not something that we see very often and it means the impacts are magnified because local communities have got no experience in this,”
Asia: Lives upended by cyclones, ‘extreme’ rainfall on the rise, warn UN agencies
Across southeast Asia, record-breaking rains and flooding caused by back-to-back tropical storms have claimed hundreds of lives and brought devastation and displacement upon entire communities, UN age...
news.un.org
December 2, 2025 at 4:10 PM
“…tropical cyclones such as Senyar, …are rare so close to the Equator.
It's not something that we see very often and it means the impacts are magnified because local communities have got no experience in this,”
It's not something that we see very often and it means the impacts are magnified because local communities have got no experience in this,”
