Author | Lightnews

Greg De Temmerman @gregdt.bsky.social · 23h

Not every day you break a word record. But for me this was yesterday!! We ran the world’s deepest marathon.

An impressive immersion in a working mine

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Greg De Temmerman @gregdt.bsky.social · 12d

Why not?

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Greg De Temmerman @gregdt.bsky.social · 12d

Weird…
Does that work?

riffonsolutions.substack.com/p/what-have-...

What have I learned in 5 years working on climate? part 1

A quick look back with some (useful I hope) thoughts

riffonsolutions.substack.com

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Greg De Temmerman @gregdt.bsky.social · 12d

And here is the first article!!
Some learnings from my climate journey…

riffonsolutions.substack.com/p/what-have-...

What have I learned in 5 years working on climate? part 1

A quick look back with some (useful I hope) thoughts

riffonsolutions.substack.com

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Greg De Temmerman @gregdt.bsky.social · 12d

Launching my Substack today !!
This will build on the content I am sharing regularly on LinkedIn and provide deeper thoughts on the fast changing space of climate and deep tech.

riffonsolutions.substack.com

Riffing on solutions | Greg De Temmerman | Substack

A page to discuss solutions to big societal challenges with a focus on deep tech for energy and climate. My take as a pragmatic optimist on the role of science and innovation. Warning: I love numbers....

riffonsolutions.substack.com

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Greg De Temmerman @gregdt.bsky.social · 15d

2 weeks to go before the World’s deepest marathon- 1.4 km below the surface.
This is going to be a world record if we make it and this is also for charity. Any donation is appreciated
worldsdeepestmarathon.raiselysite.com/greg-de-temmer…

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Greg De Temmerman @gregdt.bsky.social · Jul 17

More info here
www.linkedin.com/posts/greg-d...

Deep in the... | Greg De Temmerman

Deep in the... mine (literally...) 🏃‍♂️ A few months ago Rohitesh Dhawan asked me "We're going to run the World's deepest marathon, in a mine. Want to join?" "Are you kidding...

www.linkedin.com

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Greg De Temmerman @gregdt.bsky.social · Jul 17

100 days to go !!!! 🏃‍♂️
With a group of 60 people, we'll attempt a record-breaking marathon, 1,120m below sea level in Boliden's Garpenberg mine in Sweden.
This is done to raise money for 2 charities and change discussions around mining (critical for energy...)
Consider donating

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Greg De Temmerman @gregdt.bsky.social · Jul 12

I know. The irony is that we are visiting with a rental car which is… electric.
I am glad to know it can’t go on highways

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Greg De Temmerman @gregdt.bsky.social · Jul 12

My family is against electric cars…
Have been listening to all the usual misinformation arguments for 90 minutes and people wonder why I am quiet…

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Greg De Temmerman @gregdt.bsky.social · Jun 28

The doctor’s waiting room has some great reading 😎

@newscientist.com

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Greg De Temmerman @gregdt.bsky.social · Jun 28

Pour le “voter ecolo” je mettrai in gros gros bemol

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Greg De Temmerman @gregdt.bsky.social · Jun 12

A bit of a plug, but quite proud of that interview in @newscientist.com about the work we do at the Foundation.
You'll also find how I deal with optimism/pessimism ;-)
Thanks @tinymaddie.bsky.social for the great work

www.newscientist.com/article/2482...

The man quietly spending $1 billion on climate action

From geoengineering to anti-methane cow vaccines and green aviation fuel, meet the former nuclear physicist helping to decide which climate change technologies hold the most promise

www.newscientist.com

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Reposted by Greg De Temmerman

Rowan Hooper @rowhoop.bsky.social · Jun 11

People often wonder how climate activists stay positive. I feel like I can get behind this method from @gregdt.bsky.social

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Greg De Temmerman @gregdt.bsky.social · Jun 8

In 2023, the world produced 4.5 billion tons of oil, 9 billion tons of coal, and 2.5 billion tons of fossil gas (lnkd.in/eUUxhqc5). The combustion of which released about 37 billion tons of CO2 into the atmosphere (lnkd.in/e5t6bdhR)

www.circularity-gap.world

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Greg De Temmerman @gregdt.bsky.social · Apr 28

The video of the panel is available here

m.youtube.com/watch?v=NdXD...

Make Science Great Again - ChangeNow presentation 25 April 2025

YouTube video by We Don't Have Time

m.youtube.com

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Greg De Temmerman @gregdt.bsky.social · Apr 28

Red cap
Proud to have contributed to the launch panel of the Make Science Great Again panel by @wedonthavetime.bsky.social

Knowledge is power. Defending science is critical for well functioning societies

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Greg De Temmerman @gregdt.bsky.social · Apr 22

Great Sankey diagram about the global material flows of plastics in 2022. About 400 million tons produced.
98% of the feedstock were fossil- coal accounts for 44% and oil for 40%

www.nature.com/articles/s43...

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Greg De Temmerman @gregdt.bsky.social · Apr 13

L’energie c’est simple et complexe
J’ai eu le plaisir de discuter énergie avec Vinz Kanté sur sa chaîne Limit. On part des bases pour discuter de nombreux aspects de la decarbonation.
Bonne écoute

www.youtube.com/watch?v=Ts_g...

MYTHES & REALITÉS SUR L'ÉNERGIE ? - Greg De Temmerman | LIMIT

YouTube video by LIMIT

www.youtube.com

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Reposted by Greg De Temmerman

EcologiePunitive @ecologiepunitive.bsky.social · Apr 13

@gregdt.bsky.social chez LIMIT

youtu.be/Ts_g_KgC2GE?...

MYTHES & REALITÉS SUR L'ÉNERGIE ? - Greg De Temmerman | LIMIT

YouTube video by LIMIT

youtu.be

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Greg De Temmerman @gregdt.bsky.social · Apr 11

Il est sorti!!!!
Une vision complete de la decarbonation des transports passant par l'énergie, l'aménagement des territoires, les politiques publiques et l'économie.
Fier d'avoir pu contribuer a ce travail !
www.fnac.com/a21105661/Je...

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Greg De Temmerman @gregdt.bsky.social · Apr 9

Last year the share of low carbon electricity in the global mix reached 40% thanks for data deployment of renewables.
But fossil production also increased albeit slower.
Source ember-energy.org/latest-insig...

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Greg De Temmerman @gregdt.bsky.social · Apr 7

Interesting point. As most energy systems still rely heavily on fossil fuels it is hard to decouple both- but hopefully we will at some point.
Thanks

Greg De Temmerman @gregdt.bsky.social · Apr 7

Source: www.carlyle.com/global-insig...

The New Joule Order

The latest research from Jeff Currie, Chief Strategy Officer of Energy Pathways at Carlyle—explores the forces shaping energy markets and how the next phase is being driven by nations’ desires for ene...

www.carlyle.com

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Greg De Temmerman @gregdt.bsky.social · Apr 7

Energy security will become the highest priority for the transformation of the energy system- climate will come second at best.
This graph shows how the US, EU, China fare on that metric. The US went from a major oil importer to a next exporter (it still imports a lot).

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