Mariano Koen-Alonso (He/Him)
@mkoenalonso.bsky.social
Marine and fisheries scientist; interested in marine ecology, food webs, and ecosystem-based management among many other things. Posts are my own.
"The big tipping point was 2002. In that yr, & every yr since, Canada’s managed forest has lost C to the atmosphere. That’s 22 straight yrs of annual CO2 emissions. This clearly isn’t a problem caused by a few freak yrs. It’s an every-yr crisis & the crisis is accelerating" -@bsaxifrage.bsky.social
This is a “burning” example, but there are many others. This is about gov’s priorities & it’s the gov’s job to make these choices. Still, the fed gov should explain Canadians why these were the right policy choices without gaslighting people, or the dissonances will keep growing. I’m listening…
Emmett Macfarlane 🇨🇦@emmettmacfarlane.com · 2w agoMARK CARNEY, LADIES AND GENTLEMEN! ottawacitizen.com/public-servi...
Let's do some Canadian pipeline-wildfire math. The Canadian Energy Center says growing oil exports by 1.5M barrels/day **could** boost GDP by ~31B annually. Meanwhile, wildfire smoke health costs alone - just the health costs, nothing else - averaged 23B/year, past tense. And they're growing fast.
Ontario hardest hit as wildfires cost Canada billions | NOW Toronto
A new report estimates wildfire smoke has cost Canada $231 billion since 2014. See how much each province has spent.
nowtoronto.com
A reminder: The US, by being the largest historical CO₂ emitter, has caused $10 trillion in global climate damage since 1990. A quarter of this impact is felt domestically, but it disproportionately affects poorer countries.
US has caused $10tn worth of climate damage since 1990, research finds
US, top carbon emitter in history, has ‘a lot of responsibility’ for causing ‘substantial’ harm globally, scientist says
theguardian.com
Shocking. Stopping the source of the problem that otherwise will keep making forest fires & air quality worse going forward appears to a be the solution. Who could have thought that? I’m sure no science advisor ever brought this up to top bureaucrats & politicians… www.cbc.ca/news/science...
'Just stop burning fossil fuels.' Scientists stress that our smoky skies only have one true fix | CBC News
Smoky skies in Toronto have led to new scrutiny of government efforts to fight fires and manage forests. But scientists say the realistic way to tackle the smoke is fighting climate change itself.
cbc.ca
A great scientist, true mentor, fierce friend, and lovely person all around. He will be sorely missed, but his legacy will live on through the many he touched along the way. Until we meet again Bill..💔😢 www.cbc.ca/news/canada/...
World-renowned seabird biologist Bill Montevecchi has died | CBC News
Seabird biology and Memorial University professor emeritus Bill Montevecchi died over the weekend.
cbc.ca
I have yet to listen to the podcast, but 100% this is the discussion we need to have. 👇👇👇
Dr. Aaron Thierry@thierryaaron.bsky.social · last mo.Effective #climate policy must be grounded in historical & political reality. Pretending the transition will be smooth or inevitable sets the world up for disappointment & delay. The real debate is about political will, consumption patterns, & structural change, not just technology swaps.
"As the public overestimate the costs of net zero by up to 14,000%, the idea that decarbonisation is an unaffordable luxury needs to be put to bed. It is an unavoidable investment in a safer future and it would be cheap at any price." - @charliejgardner.bsky.social
A bargain price for reaching net zero in Britain | Letters
Letters: Dr Charlie Gardner says the public are vastly overestimating the cost of net zero. Plus letters from Moira Gommon and Diana Francis
theguardian.com
Climate change is literally canceling US independence Day celebrations. The July 4 parade in Philadelphia, the birthplace of American independence, has been canceled due to extreme heat. Heat waves aren’t new - what’s new is that climate change is making them hotter and more dangerous.
Philadelphia cancels 4th of July parade due to extreme heat, organizers say
Philadelphia's Salute to Independence parade has been canceled due to extreme heat in the weather forecast.
cbsnews.com
I really like @thierryaaron.bsky.social’s observation here; not only because it’s witty, but because it highlights that this attitude makes climate change a self-fulfilling prophecy. It fuels the feedback loops that makes it worse… & don’t even ask who is financing & benefiting from this narrative…
Dr. Aaron Thierry@thierryaaron.bsky.social · last mo.You don't hear politicians arguing that there's no point in casting ballots because you're just one vote! Why do they apply that faulty logic when it comes to national carbon emissions?
You don't hear politicians arguing that there's no point in casting ballots because you're just one vote! Why do they apply that faulty logic when it comes to national carbon emissions?
Martin Michaelis (he/him)@martmichaelis.bsky.social · last mo.Another logical fallacy. Everybody and every nation need to make their contribution to stop global warming. If small contributions were not relevant, I could stop paying taxes, because you cannot build a school or hospital from my contributions... 🧪 #EconSky #PoliSky
Two rather incompatible takes about last cuts at Fisheries and Oceans Canada (DFO): Professional Institute of the Public Service of Canada: pipsc.ca/press-releas... Minister's response: vocm.com/2026/06/26/3... Perspective is everything, but one of this must be closer to the facts than the other
Press Release: Government cuts programs it recently pledged to strengthen - PIPSC | IPFPC
Ottawa (ONTARIO), June 24, 2026 – The Professional Institute of the Public Service of Canada (PIPSC) is sounding the alarm over another round of cuts at the
pipsc.ca
I can understand that today’s geopolitical and affordability crises are real issues that we must pay attention to, but solving those without tackling climate change seriously and fast (i.e. right now) strikes me as a penny wise, pound fool approach…. www.cbc.ca/news/canada/...
Why scientists are concerned about the AMOC, and how it could impact the East Coast | CBC News
New research shows that the important AMOC is already slowing down and bringing it closer to a tipping point and eventual shutdown. The impacts would be significant for Atlantic Canada and the planet.
cbc.ca
Clear straight talk from scientific experts on the risks of geoengineering. Really worth a read. The challenge is that robust evidence-based decisions are a declining practice. Special interest lobbies, & their siren songs of quick fixes/high political returns, increasingly drive policy decisions.
Michael E. Mann@michaelemann.bsky.social · 2mo ago‘Termination shock’: trust our expert warnings on geoengineering’s planetary risks | New op-ed in @theguardian.com by Ray Pierrehumbert (@climatebook.bsky.social), Julia Slingo, @valmasdel.bsky.social & yours truly: www.theguardian.com/commentisfre...
As is the annual tradition, we hope many of you will take the opportunity to use the Climate Stripes this week to start important conversations about the risks from, and solutions to, climate change. Officially, #ShowYourStripes for 2026 is on Sat 20th June. www.ShowYourStripes.info
This week's edition of Talking Climate covers record-breaking battery storage, India's climate impacts, and how to start impact investing. Share one thing you learn with someone else. That conversation matters more than you know ... and you might be surprised where it leads!
The battery boom is here! | Talking Climate with Katharine Hayhoe
Record-breaking battery storage, India's climate impacts, and how to start impact investing First, an update: two weeks ago I mentioned how
patreon.com
A requiem to evidence www.cbc.ca/news/politic...
Carney government passes law allowing authorization of banned pesticides | CBC News
The federal government has brought in major changes to how pesticides are regulated in Canada, granting cabinet the power to authorize the use of pesticides — even ones that Health Canada has deemed u...
cbc.ca
Sucks that this 64 year old Rocky & Bullwinkle joke still hits now
The NAFO Scientific Council meeting is over. Half way through we learned that Ricardo Alpoim (Portugal) had passed. He was supposed to be with us but the sudden illness kept him away. We had strongly argued & laughed for the last 20 yr. The science was better because of it. Pibe, te voy a extrañar.
Honesty in politics… that’s a thought 🤔 www.cbc.ca/news/politic...
'Be honest with Canadians': Ex-member of top climate body criticizes Alberta pipeline deal | CBC News
A former member of Canada's top climate body said the pipeline deal Canada signed with Alberta is incompatible with Carney government's net-zero target.
cbc.ca
“This is not about saving money, this is about killing #climate science research"
Guardian Environment@environment.theguardian.com · 2mo agoScientists warn Trump plan to axe US ocean monitoring system will leave world ‘flying blind’
Sperm whale surfacing with a giant squid in its mouth [📹 lud_adventure] Original post
Decisions made without supporting evidence is bad practice.. unless of course analyses were there for those objectives that were of interest (e.g. economic impacts) and not for those deemed unimportant (e.g. emissions). Then the decisions speak of a policy choice. www.thestar.com/politics/fed...
Ottawa under increasing pressure to show how policy changes are affecting emissions
OTTAWA - The federal government is facing increased pressure to state whether it knows how some of its recent policy changes will affect Canada's greenhouse gas emissions.
thestar.com
"This is of concern because a further weakening of Atlantic heat transport in future climate change could lead to serious impacts on climate and weather conditions in Europe and other parts of the world." 🥺
Prof. Stefan Rahmstorf@rahmstorf.bsky.social · 2mo ago📣 Just out: our new study on the 'cold blob' in the Northern Atlantic. Is that due to ocean currents bringing less heat there, or due to more heat being lost through the sea surface? Our data analysis strongly suggests it's due to #AMOC slowing. 🌊 agupubs.onlinelibrary.wiley.com/doi/abs/10.1...
In our latest paper with @manonberger.bsky.social, Lester Kwiatkowski, and @bopplaurent.bsky.social, we show that if we properly account for iron limitation and nutrient competition with phytoplankton, growing seaweed isn't really an effective technique for removing atmospheric CO₂. 🌊🧪
Efficacy of seaweed-based carbon dioxide removal reduced by iron limitation and nutrient competition with phytoplankton - Nature Communications
This study shows that when iron limitation is considered, there is nowhere in the ocean that is suitable for growing kelp for carbon dioxide removal.
nature.com