Martin Fierz
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martinfierz.bsky.social
Martin Fierz
@martinfierz.bsky.social
Professor at University of Applied Sciences, Co-Founder at naneos particle solutions, interested in all things to do with energy and efficiency.
Reposted by Martin Fierz
Robert F. Kennedy Jr. has stated that the 1918 flu pandemic was caused by a lab virus from vaccine research, a defective influenza vaccine. Let’s analyze what a lie this is. First, in 1918, 107 years ago, virology was in its infancy
December 27, 2025 at 11:42 PM
Reposted by Martin Fierz
🎬 The reviews are in.

“Rigorous. Science-based. Excellent.”
“An incredible offering.”

🌍 The future isn’t waiting to be invented.
It’s waiting to be explored. Watch the video 👉 https://bit.ly/4pOkf3p

#drawdownexplorer #climatesolutions
Drawdown Explorer | The World's Ultimate Climate Solutions Platform | Take Climate Action Today
The reviews are in! People around the world are using Drawdown Explorer to take climate action today. Get started on your climate solutions journey by visiting drawdown.org/explorer Presented by Project Drawdown – the world's leading guide to science-b...
bit.ly
December 24, 2025 at 1:20 PM
Reposted by Martin Fierz
SERIOUSLY, WATCH THIS: If you really want to understand how huge SUVs and pick-up trucks have ended up being MOST of the vehicles out there in our cities, and the absolutely INSANE consequences of that, watch this easy-to-watch video by #NotJustBikes. Then please share it as much as you can.
These Stupid Trucks are Literally Killing Us
YouTube video by Not Just Bikes
youtube.com
December 23, 2025 at 2:35 AM
Reposted by Martin Fierz
Keep this in mind when people claim cars mean business — closing Central #Madrid to cars over holidays resulted in a 9.5% boost in retail spending on its main shopping street: STUDY.

There was also a 71% drop in air pollution.

Via @carltonreid.com in @forbes.com. #citymakingmath #citiesforpeople
Closing Central Madrid To Cars Resulted In 9.5% Boost To Retail Spending, Finds Bank Analysis
City of Madrid significantly boosted the takings of its shops and restaurants last Christmas by banning cars from the CBD, finds an analysis by Spain's second largest bank.
www.forbes.com
November 20, 2025 at 6:21 AM
Reposted by Martin Fierz
With the world heating up [and more pedestrians being killed], why are more SUVs being sold?

“It’s the industry that has driven the demand through huge marketing & advertising campaigns in recent years. SUVs offered the industry a simple way of charging more for a vehicle that does the same thing.”
With the world heating up, why are more SUVs being sold?
Despite dire predictions of climate breakdown, more Sports Utility Vehicles are being spotted on, and off, the roads.
www.bbc.com
November 17, 2025 at 8:09 AM
Reposted by Martin Fierz
“The rise in high-fronted SUVs poses a clear and growing threat to public safety, especially for children,” states the report. “With no benefit to society, it’s time for lawmakers at all levels to act.” Via @carltonreid.com in @forbes.com.

Cap SUV/truck hood heights. And ban unsafe designs.
EU Must Cap SUV Hood Heights Urges Report. Crash Test Body Says Not As Simple As That
Higher fronts on cars significantly increase the death rate when pedestrians and cyclists are struck, says new report. EuroNCAP says more complex than that.
www.forbes.com
November 15, 2025 at 7:18 AM
Reposted by Martin Fierz
The same people who deny that releasing 40+ billion tonnes of chemicals annually into the atmosphere changes our climate think that an airplane spraying a few tonnes of chemicals into the atmosphere definitely does. I want the world to be less stupid, as well as less evil.
July 12, 2025 at 12:28 PM
Dear Climate Bsky,

can you recommend movies on the climate crisis to watch with students (adult, beginning university) with no or little background in natural sciences?
In particular, movies that would serve as starting point for interesting discussions and not overly long?

#greensky #climate
July 8, 2025 at 4:52 PM
Reposted by Martin Fierz
July 7, 2025 at 5:29 AM
Reposted by Martin Fierz
Sadly, the now-famous summer activation of the former highway for cars running alone the Seine River in Paris, transforming it into a vibrant and popular people-place, doesn’t start for another two weeks.

So this is all that’s going on.

Yes, I’m being sarcastic.
#ParisPlage
June 20, 2025 at 9:09 PM
Reposted by Martin Fierz
Look people, no matter how much we destroy the Earth by polluting it with CO₂, microplastics, PFAS, etc. everywhere, and even if AMOC shuts down and both the Greenland and Antarctic ice sheets melt, the Earth will still be infinitely more habitable than Mars. Mars is a shithole and we're not going.
June 19, 2025 at 6:18 PM
Reposted by Martin Fierz
Autos haben immer höhere Motorhauben. Dabei enden Unfälle mit einer 90 cm hohen Stahlblechhaube für Fahrradfahrende & Fuß­gän­ge­r*in­nen schon mit deutlich höherer Wahrscheinlichkeit tödlich als bei 80 cm hohen Hauben.
👉🏽 für eine EU-Regelung für Größen & Eigenverantwortung
taz.de/Nanja-Boenis...
Größer werdende Autos: Motorhauben, die töten
Autos werden vorne immer wuchtiger – mit jedem Zentimeter steigt die Gefahr für die Umgebung. Nötig sind gesetzliche Größenbeschränkungen.
taz.de
June 13, 2025 at 8:22 PM
Reposted by Martin Fierz
As climate scientists, we can only tell you why climate change is happening and how severe the consequences will be. It takes voters to choose politicians who will listen and enact policies to avoid the worst possible outcomes.
June 12, 2025 at 1:15 PM
Reposted by Martin Fierz
“Vehicles with higher, more vertical front ends pose greater risk to pedestrians. Vehicles with especially tall front ends are most dangerous to pedestrians, but a blunt profile makes medium-height vehicles deadly too.”

Deadly by design. And they know it.

www.iihs.org/news/detail/...
May 18, 2025 at 3:31 PM
Reposted by Martin Fierz
Jetzt sollen wir 5 % unseres BIP für Verteidigung ausgeben – wegen Putins Krieg. Und womit finanziert er ihn? Mit Öl. Jeder Euro, den wir für Erdöl ausgeben, macht 37 Cent Rüstungsausgaben nötig. Wann, wenn nicht jetzt, stoppen wir neue Ölheizungen und Verbrenner?
youtube.com/shorts/38cE6...
Autofahren für den Krieg 🛡️🗡️#öl #putin #krieg
YouTube video by Prof. Dr. Volker Quaschning
youtube.com
May 16, 2025 at 2:26 PM
Reposted by Martin Fierz
I think a lot about what Carl Sagan said in one of his final interviews.
May 4, 2025 at 6:21 AM
Reposted by Martin Fierz
We simply had to intentionally destroy the world’s strongest economy while dismantling our scientific and educational infrastructure to ensure that a team with a trans girl would never finish second place in the Mountain West volleyball standings again
April 2, 2025 at 10:30 PM
Reposted by Martin Fierz
Canada is potentially about to elect a Prime Minister with a PhD in economics from Oxford, Mexico elected someone with a degree in physics and a PhD in energy engineering…

Meanwhile, America elected a barely sentient orange turnip.

Any Questions?!
March 28, 2025 at 7:12 AM
Reposted by Martin Fierz
Water Balloons xkcd.com/3061
March 11, 2025 at 4:01 AM
Reposted by Martin Fierz
This is Winston Churchill visiting Washington DC to request assistance in the war against Germany. Notice he is wearing a "zip suit" and not a traditional suit. This was to honor the British troops--the same reason Zelensky dresses the way he does.
March 1, 2025 at 3:34 PM
Reposted by Martin Fierz
Ian Fleming's original James Bond novels haven't aged well. For example, Moonraker - published almost exactly 70 years ago in April 1955 - features a villain who's a super-rich industrialist and rocket-maker seeking to cause chaos because he's a secret Nazi. Such a silly idea!
a man with a beard is sitting in a room with a harp in the background
ALT: a man with a beard is sitting in a room with a harp in the background
media.tenor.com
February 22, 2025 at 6:57 PM
Reposted by Martin Fierz
Wow can’t believe Google went there
February 11, 2025 at 3:11 AM
Reposted by Martin Fierz
This one is doing the rounds, for obvious reasons.
February 9, 2025 at 4:27 AM
don't look up....
The most iconic figure in the environmental sciences is the Keeling Curve, the CO₂ record from Mauna Loa, Hawaii.

@noaa.gov had a wonderful site where you could visualize and download these data, and now it's just gone. These data belong to us and we should not let this happen!
February 5, 2025 at 5:53 PM