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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his)
@lionlchristiaen.bsky.social
1.2K followers 2K following 300 posts
Dev cell syst biol, cardiopharyngeal, coll migr, ecodevo. Dir Sars Centre, U Bergen. NIH DEV1 rev. Prof NYU Bio. Postdoc UC Berkeley. PhD CNRS/Paris XI. Agrégé. Archicube. French & American. https://www.uib.no/en/michaelsarscentre/141681/christiaen-group
www.uib.no
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · Feb 2
Urgent to deploy cutting edge science and learn about the multiscale impacts of warming oceans on marine Life. From molecules to cells, organisms, populations and ecosystems. @msarscentre.bsky.social @cbubergen.bsky.social
@embl.org @ercresearch.bsky.social
ecowarriorss.bsky.social
Go Green @ecowarriorss.bsky.social · Feb 1
Global warming is accelerating
According to a new study, the world’s oceans are warming 4 times faster than they were in the late 1980s, and the burning of fossil fuels is behind the dramatic acceleration

www.conservation.org/blog/news-sp...
News spotlight: Fossil fuels behind extreme ocean temperatures, study says
According to a new study, the world’s oceans are warming four times faster than they were in the late 1980s, and the burning of fossil fuels is behind the dramatic acceleration.
www.conservation.org
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Reposted by Lionel Christiaen, PhD (he/him/his)
carlzimmer.com
Carl Zimmer @carlzimmer.com · 1h
Today my @nytimes.com colleagues and I are launching a new series called Lost Science. We interview US scientists who can no longer discover something new about our world, thanks to this year‘s cuts. Here is my first interview with a scientist who studied bees and fires. Gift link: nyti.ms/3IWXbiE
nyti.ms
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Reposted by Lionel Christiaen, PhD (he/him/his)
governor.ca.gov
Governor Gavin Newsom @governor.ca.gov · 1h
It's been over 9 months since the Palisades and Eaton Fires tore through Los Angeles. We asked for federal support, but we haven’t heard a word from the White House.

Not a single offer.

Is this what leadership looks like? Abandoning the American people when they call for help?
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Reposted by Lionel Christiaen, PhD (he/him/his)
duckworth.senate.gov
Tammy Duckworth @duckworth.senate.gov · 9h
This is what dictators and authoritarians do, not Presidents of the United States of America.
Trump Calls for Jailing of Chicago Mayor and Illinois Governor
The president in a social-media post says Mayor Brandon Johnson and Gov. JB Pritzker have failed to protect ICE.
www.wsj.com
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Reposted by Lionel Christiaen, PhD (he/him/his)
msarscentre.bsky.social
Michael Sars Centre @msarscentre.bsky.social · 16h
Over a year, members of the @lionlchristiaen.bsky.social & @pawelburkhardt.bsky.social groups examined the environmental impact of their work - from energy use to travels - and were able to make significant changes towards a more sustainable science ♻️ Read on to find out about the process ⤵️
Two research groups obtain My Green Lab certification at the Michael Sars Centre
Efforts to make the Christiaen and Burkhardt laboratories more sustainable were rewarded with the highest-level certification from international environmental organization My Green Lab. The initiative...
tinyurl.com
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Reposted by Lionel Christiaen, PhD (he/him/his)
seemagrewal.bsky.social
Seema Grewal @seemagrewal.bsky.social · 1d
So sad to hear the news - John truly was an inspiration to so many, and one of a kind.

www.cam.ac.uk/research/new...
Nobel Laureate Professor Sir John Gurdon dies aged 92
It is with great sadness that the University shares the news of the death of Professor Sir John Gurdon, founder of the Gurdon Institute.
www.cam.ac.uk
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Reposted by Lionel Christiaen, PhD (he/him/his)
mehdirhasan.bsky.social
Mehdi Hasan @mehdirhasan.bsky.social · 4d
Free Greta Thunberg and the rest of the illegally detained flotilla activists.
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Reposted by Lionel Christiaen, PhD (he/him/his)
erictopol.bsky.social
Eric Topol @erictopol.bsky.social · Apr 18
Below, from earlier today, confirmed @statnews.com www.statnews.com/2025/04/18/n...
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Reposted by Lionel Christiaen, PhD (he/him/his)
governor.ca.gov
Governor Gavin Newsom @governor.ca.gov · 6d
IF ANY CALIFORNIA UNIVERSITY SIGNS THIS RADICAL AGREEMENT, THEY'LL LOSE BILLIONS IN STATE FUNDING — INCLUDING CAL GRANTS — INSTANTLY.

CALIFORNIA WILL NOT BANKROLL SCHOOLS THAT SELL OUT THEIR STUDENTS, PROFESSORS, RESEARCHERS, AND SURRENDER ACADEMIC FREEDOM.
New York Times: "Trump Administration Asks Colleges to Sign ‘Compact’ to Get Funding Preference." The White House asked nine top universities to pledge support for President Trump’s agenda to help ensure access to research funding.
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · 5d
At least it would provide more in-depth understanding, and thus more opportunities and solid basis to engage.
Reposted by Lionel Christiaen, PhD (he/him/his)
globalecoguy.bsky.social
Dr. Jonathan Foley @globalecoguy.bsky.social · 7d
Very cool! The BBC is featuring the new SHIFT website that we built with @kimberlynicholas.bsky.social to advance tailored, science-based personal climate actions.

www.bbc.com/future/artic...
Care about climate change? The evidence shows these are the most impactful actions you can take
Care about climate change? Here's what the evidence shows are the most effective things you can do.
www.bbc.com
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Reposted by Lionel Christiaen, PhD (he/him/his)
hillaryclinton.bsky.social
Hillary Rodham Clinton @hillaryclinton.bsky.social · 7d
For over 60 years, Jane Goodall was a force for research about our precious planet—and climate change action to protect it—while breaking glass ceilings along the way.

I'll so miss her courage and commitment to help expand what we know about our world and preserve it for the generations to come.
Jane Goodall holding a sign that says “Vote for Nature!” in a group shot
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Reposted by Lionel Christiaen, PhD (he/him/his)
msarscentre.bsky.social
Michael Sars Centre @msarscentre.bsky.social · 7d
Comb jelly season has started in Bergen, Norway! 🌈🍂🧪
pawelburkhardt.bsky.social
Pawel Burkhardt @pawelburkhardt.bsky.social · 7d
Another season has started as well. We now find many different ctenophores in Byfjorden, a fjord that runs into the city center of Bergen.

Here the ctenophore Mnemiopsis leidyi: it uses a row of cilia called comb plates to swim. When hit by light, they create shimmering rainbows along their bodies.
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Reposted by Lionel Christiaen, PhD (he/him/his)
triggerloop.bsky.social
Craig Kaplan @triggerloop.bsky.social · 8d
I think the R01 is basically a non-starter at NIGMS now. Data from NIH Reporter for new and competing awards, comparing number of R01s issued relative to R35s (MIRA). This has major ramifications for basic science and basic science investigators that are not yet in the MIRA pool
Graph showing total R35+R01 awards issued by NIGMS from 2020 to 2025. R01 in black showing a steep decline. R35 showing an increase. Total awards in 2025 slightly up from 2024 but these years are lower than 2020-2023
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Reposted by Lionel Christiaen, PhD (he/him/his)
denisduboule.bsky.social
Denis Duboule @denisduboule.bsky.social · 8d
Wonderful meeting @embl.org to celebrate the amazing career of #AnneEphrussi 👏🎉🤟
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Reposted by Lionel Christiaen, PhD (he/him/his)
eikofried.bsky.social
Eiko Fried @eikofried.bsky.social · 9d
Intervening on a central node in a network likely does little given that its connected neighbors will "flip it back" immediately. Happy to see this position supported now.

"Change is most likely [..] if it spreads first among relatively poorly connected nodes."

www.nature.com/articles/s41...
Transformation starts at the periphery of networks where pushback is less - Scientific Reports
Scientific Reports - Transformation starts at the periphery of networks where pushback is less
www.nature.com
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · 11d
At first I read this differently…
a red race car with a good year logo on the front
ALT: a red race car with a good year logo on the front
media.tenor.com
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Reposted by Lionel Christiaen, PhD (he/him/his)
audreydsg.bsky.social
Audrey Desgrange @audreydsg.bsky.social · 14d
Ventricle position can be remodeled after heart looping!
In a model of heterotaxy we uncovered a new asymmetric morphogenesis process during which the heart reorients its chambers.
So grateful to all the authors for their expertise and input during this long (but fun) ride 💪
Read more here ⬇️
meilhacsigolene.bsky.social
Sigolène Meilhac @meilhacsigolene.bsky.social · 14d
New publication | Science Advances www.science.org/doi/10.1126/...
Plasticity of ventricle position after heart looping in heterotaxy with right isomerism
The left/right position of ventricles needs to be maintained after heart looping, an unexpected step affected in heterotaxy.
www.science.org
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Reposted by Lionel Christiaen, PhD (he/him/his)
richardsever.bsky.social
Richard Sever @richardsever.bsky.social · 14d
HHMI adopts Plan U journals.plos.org/plosbiology/...
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Reposted by Lionel Christiaen, PhD (he/him/his)
rupress.org
Rockefeller University Press @rupress.org · 15d
New perspective in @jcb.org by @maikbischoff.bsky.social & @mayorlab.bsky.social about how mesenchymal cells use contact-dependent rules to generate swarm-like behaviors, patterns & organ forms. rupress.org/jcb/article/...

#CellBio #CellMigration #Morphogenesis #Development #Science
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Reposted by Lionel Christiaen, PhD (he/him/his)
zohrankmamdani.bsky.social
Zohran Kwame Mamdani @zohrankmamdani.bsky.social · 15d
Universal childcare wouldn't just relieve working families of a massive cost burden. It improves the whole economy.

"There are a lot of reasons building a child care system that works for everyone is important to our children, to parents, to employers and to economic growth."
How Universal Child Care Could Change the Economy
www.nytimes.com
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Reposted by Lionel Christiaen, PhD (he/him/his)
msarscentre.bsky.social
Michael Sars Centre @msarscentre.bsky.social · 15d
Explaining sea squirt development to the public? Challenge accepted! Our team had a great time at the #forskningsdagene science fair over the weekend. We met visitors of all ages who shared our excitement for science, and went back to the lab inspired and energized 🤩✨
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Reposted by Lionel Christiaen, PhD (he/him/his)
atrupar.com
Aaron Rupar @atrupar.com · 15d
Kamala Harris: "It feels chaotic, but what I would offer you is what we are witnessing is the swift implementation of a plan that was decades in the making. Project 2025 didn't just drop out of thin air. That's a product of decades of work. Federalist Society, Heritage Foundation ... "
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · 15d
Rhinoceroses are in the air
They make me wanna shave my hair
#Ionnesco
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · 16d
Credits to Chiara Castelletti @chiaracastelletti.bsky.social
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lionlchristiaen.bsky.social
Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · 16d
Modeling whole ascidian embryos for #forksningdagene 😉🧪🧬🔬#devbio
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