Andy Szava-Kovats 🇨🇦
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andyszavakovats.bsky.social
Andy Szava-Kovats 🇨🇦
@andyszavakovats.bsky.social
Radiologist + Nuclear Medicine Physician 🩻 ⚛️ | Clinical Assistant Professor @ UCalgary 🎓 🏥 | Environmentalist in Calgary 🏔️ 🌱 | Husband + dad to 2 awesome humans 🧑‍🧑‍🧒‍🧒 #RadSky #MedSky #ClimateSky
Why should physicians, including radiologists, talk about climate change? ❓

💚 It affects our patients’ health. We can’t have healthy patients without a healthy planet.

🏥 Healthcare, and radiology in particular, is a significant contributor to GHGs.

📢 Our voices as physicians carry weight.
Canadian Association of Radiologists Statement on Environmental Sustainability in Medical Imaging - Kate Hanneman, Andrew Szava-Kovats, Brent Burbridge, David Leswick, Brandon Nadeau, Omar Islam, Emil...
Immediate and strategic action is needed to improve environmental sustainability and reduce the detrimental effects of climate change. Climate change is already...
journals.sagepub.com
October 22, 2025 at 8:54 PM
The future and the past in one picture. 🔌 ⚡️
October 20, 2025 at 7:34 AM
A real privilege to welcome Dr. Kate Hanneman to the University of Calgary this week as our Visiting Professor.

Her talk on sustainability in medical imaging and planetary health was both inspiring and practical.

Excited to keep pushing these conversations forward here in Calgary!🌱 🩻 🌎
September 19, 2025 at 4:14 PM
“How should Canada respond to Charlie Kirk's murder? Doing better here in Canada means refusing to import the worst elements of America’s ongoing culture war into our own politics.” @maxfawcett.bsky.social
How Canada should respond to Charlie Kirk’s murder
Doing better here in Canada means refusing to import the worst elements of America’s ongoing culture war into our own politics.
www.nationalobserver.com
September 16, 2025 at 5:58 PM
🚲 𝗘-𝗯𝗶𝗸𝗲𝘀 𝗮𝗿𝗲 𝗮𝗺𝗼𝗻𝗴 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝘁𝗿𝗮𝗻𝘀𝗽𝗼𝗿𝘁𝗮𝘁𝗶𝗼𝗻 𝗱𝗲𝘃𝗶𝗰𝗲𝘀 𝗲𝘃𝗲𝗿 𝗶𝗻𝘃𝗲𝗻𝘁𝗲𝗱.
🚙 Cars? Among the least.

E-bike: 20–30 Wh/km [1]
Walking: 50–70 Wh/km [2]
Light rail: 80–120 Wh/km [3]
EV car: 150–200 Wh/km [4]
Gas car: 600–800 Wh/km [5]

Imagine if we built our cities around the most efficient ride.
September 7, 2025 at 3:47 AM
Early evidence suggests bi-parametric prostate MRI may bring:
💰 lower costs
⏱️ faster scans
⚠️ safer (no contrast)
🌱 smaller environmental footprint

Good for patients. Good for taxpayers. Good for the planet. ✅ ✅ ✅ #radsky
‪READ: New evidence suggests this streamlined imaging technique without contrast might be just as effective as traditional methods, while being safer and more cost-efficient! While more #research is needed, early results are promising.

https://journals.sagepub.com/doi/full/10.1177/08465371251342706
September 3, 2025 at 5:39 PM
❓𝗪𝗵𝗮𝘁 𝗱𝗼𝗲𝘀 𝘀𝘂𝘀𝘁𝗮𝗶𝗻𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗵𝗮𝘃𝗲 𝘁𝗼 𝗱𝗼 𝘄𝗶𝘁𝗵 𝗿𝗮𝗱𝗶𝗼𝗹𝗼𝗴𝘆?

🏥 Healthcare = 5% of global CO2 pollution.
🩻 Radiology = 1/5 of that.

(✈️ For perspective, aviation is ≈2%.)

⚡ CTs waste ~⅔ of their energy.
⚡ MRIs waste ~⅓.

Rads, techs, industry all have a role. 🤝
Healthy planet = healthier patients. 🩺🌍
Environmental Sustainability in Radiology Playbook: Learn How to Make Medical Imaging Safer for the Environment - CAR - Canadian Association of Radiologists
The CAR and its members have consistently made environmental sustainability a priority in radiology, through research, presentations, publications, and more. Radiology departments are high consumers o...
car.ca
September 3, 2025 at 5:13 PM
Even if you wrapped the entire planet in oil and gas wells,
they’d still end up as stranded assets as the world moves on to cleaner (and cheaper) energy.

One of the biggest mistakes fossil fuel execs can make is
equating SHORT-TERM PROFITS with LONG-TERM REALITY!
September 3, 2025 at 5:04 PM
If Canada’s CO₂ emissions fell to zero, the climate would barely notice—we emit <2% of global total.

Its a familiar argument:
“𝙊𝙪𝙧 𝙘𝙤𝙪𝙣𝙩𝙧𝙮’𝙨 𝙚𝙢𝙞𝙨𝙨𝙞𝙤𝙣𝙨 𝙖𝙧𝙚 𝙣𝙚𝙜𝙡𝙞𝙜𝙞𝙗𝙡𝙚. 𝙄𝙩 𝙙𝙤𝙚𝙨𝙣’𝙩 𝙢𝙖𝙩𝙩𝙚𝙧 𝙬𝙝𝙖𝙩 𝙬𝙚 𝙙𝙤.”

And I get it—graphs like this 𝘤𝘢𝘯 make us feel powerless.

But here’s why our actions 𝘥𝘰 matter: 🧵
August 29, 2025 at 5:52 AM
Exxon in 1977 (quietly): CO₂ from fossil fuels, per our own scientists, will warm the planet. 🤐

Exxon in 2000: Who can really say if fossil fuels are warming the planet, the science is just too complicated to know. 🤷‍♂️

Exxon now: Okay you were right. But we are totally going to techno-fix it now! 😇
August 23, 2025 at 4:59 PM
Canada and the U.S. blaming climate change on “China and India” is like a mansion cranking the AC to 18 °C all summer, then blaming the apartment complex down the street — which doesn’t even have AC — because their total power bill is bigger.
(Never mind the fact that 400 people live there.)
August 11, 2025 at 7:00 PM
Reposted by Andy Szava-Kovats 🇨🇦
Our American neighbours are trying to reverse the global #energytransition. It’s a fool’s errand, and Canada should not join it. 🇨🇦 🇺🇸 ⚡️
August 1, 2025 at 12:18 PM
𝗧𝘄𝗼 𝗺𝗮𝗽𝘀. 𝗢𝗻𝗲 𝗹𝗼𝗼𝗺𝗶𝗻𝗴 𝗰𝗿𝗶𝘀𝗶𝘀.

🗺️ 1: Where people live (population density, 2025).
🗺️ 2: Where people are most vulnerable to climate change (IPCC, 2022)

What happens when the 𝙢𝙤𝙨𝙩 𝙥𝙤𝙥𝙪𝙡𝙖𝙩𝙚𝙙 𝙧𝙚𝙜𝙞𝙤𝙣𝙨 also become the 𝙡𝙚𝙖𝙨𝙩 𝙝𝙖𝙗𝙞𝙩𝙖𝙗𝙡𝙚?
🌍 Mass migration
🌾 Food insecurity
⚔️ Conflicts
🧭 Global instability
August 2, 2025 at 3:20 PM
“Sure, Donald Trump might be able to slow the progress of electrification and renewable energy in America, but he’ll just as surely speed it up in the rest of the world in the process. Which side of that divide do we really want to be on in the end?”

Max: 1 | Fossil lobby fiction: 0
August 2, 2025 at 2:36 AM
Reposted by Andy Szava-Kovats 🇨🇦
It is endlessly hilarious to me that the 5 denier scientists they are able to dig up for this ... are the same 5 denier scientists they were able to dig up 10 years ago, and 20 years ago.

One might ask why no new scientists are joining this faction. Must be the global conspiracy.
July 30, 2025 at 6:27 PM
Carbon capture actually makes me angrier than almost anything in climate policy. It’s been 50 years of wildly expensive pilot projects—and a major project still hasn’t delivered on promised emissions reductions. Not once.

But sure, it’s a “common sense” solution. 🙃

Rant 🧵 ⬇️

1/n
Most major carbon capture and storage projects haven't met targets
The majority of 13 flagship CCS schemes worldwide, representing 55 per cent of captured carbon dioxide, have either failed entirely or captured much less CO2 than expected
www.newscientist.com
July 31, 2025 at 4:03 AM
Reposted by Andy Szava-Kovats 🇨🇦
The "worst-case scenario of famine" is unfolding in Gaza under Israel’s military assault, the world's leading body on hunger said.
July 30, 2025 at 12:01 PM
Fiscally conservative: Put a market price on carbon and let the free market decide the best path to decarbonization.

Not fiscally conservative: Block renewables with red tape while handing out taxpayer money to oil companies for carbon capture—a “work in progress” since the 1970s.
July 29, 2025 at 4:18 AM
Few things illustrate the absurdity of North American car dependency better than this: most households consume more energy powering their cars than they do running their entire homes on electricity.
July 27, 2025 at 8:10 PM
Reposted by Andy Szava-Kovats 🇨🇦
If you care about climate, you must understand this thing
July 25, 2025 at 2:31 PM
The most under-told fact about COVID:

The world’s 10 richest men more than doubled their wealth—from $700B to $1.5T.

At the same time, 99% of humanity got poorer, 160M+ pushed into poverty.

The largest upward transfer of wealth in human history became background noise to fights about masks.
Ten richest men double their fortunes in pandemic while incomes of 99 percent of humanity fall | Oxfam International
www.oxfam.org
July 24, 2025 at 2:04 PM
“Too late” for what? 1.5°C? Likely. But 2.5°C is better than 3°C, and 3°C is better than 4°C. It’s not all-or-nothing. Yes, there are tipping points — but doom messaging risks paralysis. Every fraction of a degree avoided still makes a difference — for lives, ecosystems, and the future. #ClimateSky
July 20, 2025 at 7:49 PM
Love @katharinehayhoe.com’s analogy for climate change—a pool filling by a hose—CO₂. We can turn down the hose (cut emissions), widen the drain (carbon removal), or learn to swim (adapt).

But what about 𝗺𝗲𝘁𝗵𝗮𝗻𝗲—𝟴𝟬× 𝗺𝗼𝗿𝗲 𝗽𝗼𝘁𝗲𝗻𝘁 𝘁𝗵𝗮𝗻 𝗖𝗢₂? It’s a cannonball. Sudden splash. Big spike. 💣💦 🌍
#ClimateSky
First, how do we measure climate impact?

Not by annual emissions, as many assume, but rather by cumulative emissions.

Just as the water level in a pool reflects all the water from the hose over time, so also climate responds to the cumulative buildup of heat-trapping gases in the atmosphere.
July 17, 2025 at 9:02 PM
As a nuclear medicine physician and climate advocate, I support renewables first. But we shouldn’t dismiss nuclear — it’s among the 𝘭𝘰𝘸𝘦𝘴𝘵-𝘦𝘮𝘪𝘴𝘴𝘪𝘰𝘯, 𝘭𝘰𝘸𝘦𝘴𝘵-𝘮𝘰𝘳𝘵𝘢𝘭𝘪𝘵𝘺 energy sources we have.

Yes, uranium must be mined — but it’s 𝙢𝙞𝙡𝙡𝙞𝙤𝙣𝙨 𝙭 𝙢𝙤𝙧𝙚 𝙚𝙣𝙚𝙧𝙜𝙮-𝙙𝙚𝙣𝙨𝙚 than fossil fuels. 🪨⚛️ 💪

#ClimateSky
July 17, 2025 at 4:16 PM
We invented dirt-cheap magic sky panels that turn sunlight into electricity.
But instead, society said:
“Let’s keep digging up dino sludge, light it on fire, and then pay billions to 𝙢𝙖𝙮𝙗𝙚 try stuffing the smoke back underground. Common sense. Fiscally responsible.”
At this rate, carbon dioxide removal will never matter for the climate
The carbon dioxide removal industry is struggling to grow at the pace needed to have a significant role in meeting climate targets
www.newscientist.com
July 11, 2025 at 4:00 PM