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Dan Schrider

@samurscicop.bsky.social
628 followers 468 following 100 posts

An aquatic ape studying population genetics at the University of North Carolina.

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Dan Schrider @samurscicop.bsky.social · 21/09/2026
The (literal) closing of a chapter, former Schrider Lab student Amjad Dabi's paper where he simulates evolutionary rescue scenarios to model the dynamics of treatment resistance in sequential cancer therapy is now published in PLoS Comp Bio: journals.plos.org/ploscompbiol... (1/5)
journals.plos.org
Evolutionary rescue model informs strategies for driving cancer cell populations to extinction
Author summary Cancer cells often evolve resistance to treatments during therapy by acquiring specific mutations, leading to eventual relapse and treatment failure. While using multiple treatments in ...
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Alicia Ault @aliciaault.bsky.social · 03/09/2026
@reuters.com reporting that RFK asked the CDC to take the 2 measles-associated deaths in Pennsylvania out of the agency's official statistics. #IDSky #EpiSky #pediatrics #politics #MMR #vaccines
reuters.com
EXCLUSIVE: Kennedy asked to remove Pennsylvania measles death from CDC tally, sources say
U.S. Health Secretary Robert F. Kennedy Jr. asked his new CDC director to remove a reference to two Pennsylvania deaths from the agency’s online measles tally after he questioned whether the disease c...
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Simon W Davis @woodforbrains.bsky.social · 03/09/2026
Ho-LEE fuck democrats-appropriations.house.gov/news/press-r...
democrats-appropriations.house.gov
Defense Officials Attempt to Raid NIH Funds to Cover Department of Defense Activities
House Appropriations Committee Ranking Member Rosa DeLauro (D-CT-03) has learned that officials at the Department of Defense (DoD) are working to divert billions of dollars from the National Institute...
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Dan Schrider @samurscicop.bsky.social · 21/08/2026
Ages ago I shared a preprint about how gene conversion can cause hard selective sweeps to look like soft sweeps by copying the adaptive allele onto different haplotypes. The accepted version is now published in GENETICS: academic.oup.com/genetics/adv...
academic.oup.com
Allelic gene conversion softens selective sweeps
Abstract. The prominence of positive selection, in which beneficial mutations are favored by natural selection and rapidly increase in frequency, is a subj
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Sholto David @sholtodavid.bsky.social · 06/08/2026
A tool used to rephrase plagiarised text changed "final solution" to "mass killing of an ethnic group" in a chemistry paper. Now retracted thanks to a PubPeer user who spotted this. pubpeer.com/publications...
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Dan Schrider @samurscicop.bsky.social · 18/07/2026
Can't stop thinking about the delivery of this line: youtu.be/iB9M0LMJtyk?...
youtu.be
Jurassic Park - He left us, he left us! But thats not... what I'm gonna do.
YouTube video by DestroLennox
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Megan Smith @snaildit.bsky.social · 19/06/2026
I’m also recruiting a postdoc to work on an NSF-funded project focused on using machine learning for population genetic inference. Would love to talk to anyone who is interested! (Official ad to come soon).
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Matthew Hahn @3rdreviewer.bsky.social · 02/07/2026
My abiding memory of a wonderful #SMBE2026:
A photo of Danny DeVito
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Prasad Jallepalli, MD, PhD @prasad.bsky.social · 25/06/2026
Before 1991, rural and urban America shared similar rates of cancer mortality. When the national rate started to decline, however, rural America lagged behind. Around 458 rural counties even experienced increasing cancer mortality. fortune.com/2026/06/23/c... health disparities are deadly serious
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Dan Schrider @samurscicop.bsky.social · 18/06/2026
Postdoc search update! I am continuing to solicit applications for a postdoc opening in the lab, and probably around the beginning of July I will start selecting applicants to interview. See evoldir ad here: evoldir.net/brian/evoldi... Please RT or whatever!
evoldir.net
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Dan Schrider @samurscicop.bsky.social · 18/06/2026
Dylan Ray, a member of my lab whom some of you may know, has asked that I share this GoFundMe that is related to a very unfortunate situation that has affected his family. If you have time, please take a look and consider donating or circulating: www.gofundme.com/f/justice-fo...
gofundme.com
Donate to Justice for Shaela Ray, organized by Kathy Ray
My heart is completely broken. We have tragically lost someone who was the absolute center of so many… Kathy Ray needs your support for Justice for Shaela Ray
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27 UNIHTED @27unihted.bsky.social · 09/06/2026
One year ago today, 300+ NIH scientists and staff risked their livelihoods by signing the Bethesda Declaration to call out government leadership for harms to science and patients... ...today, their new report documents continuing harm to science and the American public. www.27unihted.org/bd-home
Picture of crowd outside nih with text 

One year ago today, 300+ NIH scientists and staff risked their livelihoods by signing the Bethesda Declaration to call out government leadership for harms to science and patients...

...today, their new report documents continuing harm to science and the American public.
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Matthew Hahn @3rdreviewer.bsky.social · 02/06/2026
Very happy to announce a big new paper from the lab, led by grad students @smishra677.bsky.social and Laia Pomar-Pallarès (in collaboration with @roblanfear.bsky.social). We introduce a new way to study introgression, with accompanying software (DAFT) 1/n 🧵 www.biorxiv.org/content/10.6...
biorxiv.org
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Dan Schrider @samurscicop.bsky.social · 31/05/2026
Andy Kern, who doesn't (really) have an account here, would like to share his group's new tool for speeding up pop gen summary stat calculations using GPUs. Check it out here: www.biorxiv.org/content/10.6... And see his thread over at the other place: x.com/pastramimach...
biorxiv.org
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Jeremy Berg @jeremymberg.bsky.social · 30/05/2026
Several people have asked for possible content and structure for comments regarding the proposed OMB regulations. With some suggestions from others, I have posted on example (as a Word document) for downloading). jeremymberg.github.io/jeremyberg.g... I hope this is helpful.
jeremymberg.github.io
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Zamin Iqbal @zaminiqbal.bsky.social · 25/05/2026
This is awful to hear, describing how Sean Eddy (HMMER, infernal, pfam, rfam) has been defunded. The letter said his work "had been determined to be of absolutely no value to the US taxpayer, and therefore it was being specifically terminated," www.npr.org/2026/05/21/n...
npr.org
Researchers say the Trump administration is finding new ways to punish science
Even with federal grants largely restored, scientists say the Trump administration is still preventing those funds from reaching them. The consequences, they say, are already becoming clear.
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Jeremy Berg @jeremymberg.bsky.social · 23/05/2026
If you want to see the hugely positive effect of the leadership of the National Academies of Science in shying away from topics that are deemed controversial based on partisan positions, here you go... 1/3
A post on X/Twitter from OMB director Russ Vought supporting attacks against of the National Academies.
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Dan Schrider @samurscicop.bsky.social · 20/05/2026
Update! The posting for the postdoc opening in my lab is up! Apply here: unc.peopleadmin.com/postings/319...
unc.peopleadmin.com
Post-Doc Research Associate (Schrider)
The Schrider Lab at the University of North Carolina at Chapel Hill is hiring a postdoc in population genetics and/or phylogenetics. The successful candidate will help design and carry out projects re...
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Derf Backderf @derfbackderf.bsky.social · 04/05/2026
A survivor of the Kent State Massacre rings the bell on campus today, May 4, at exactly 12:20, the moment his classmates fell, 56 years ago.
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Dan Schrider @samurscicop.bsky.social · 28/04/2026
Please circulate: I will have a postdoc opening soon, ideally with a start date sometime this summer or fall. If you're interested in empirical population genetics, computational methods development, and/or evolutionary modeling via simulation, don't hesitate to reach out. For more info on the lab:
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Dan Schrider @samurscicop.bsky.social · 23/04/2026
Probably time to start posting about the lab's research again. We've been doing stuff, I swear!
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Dan Schrider @samurscicop.bsky.social · 23/04/2026
Was fun to be a part of this study with Enrico Bazzicalupo, José Godoy, and colleagues. Lynx introgression. Check it out!
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Laura Lopez @ohdearz.bsky.social · 18/04/2026
This report came out today by minority staff of the House science committee on how three NASA missions were aborted due to NASA illegally following the FY26 president's budget request instead of congressionally approved budget. Very important reading. 🔭🧪 democrats-science.house.gov/staff-report...
Cover of report "Mission Aborted: how NASA illegally implemented the president's budget request without congressional approval. Minority staff report, prepared by members of the committee on science, space, and technology, us house of representatives, April 2026
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Matthew Hahn @3rdreviewer.bsky.social · 10/04/2026
Whoa—machine learning strikes again (in a good way) www.pnas.org/doi/10.1073/...
pnas.org
Coalescence and translation: A language model for population genetics | PNAS
Probabilistic models such as the sequentially Markovian coalescent have long provided a powerful framework for population genetic inference, enabli...
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Jeremy Berg @jeremymberg.bsky.social · 26/03/2026
My NIH update Let me start by saying again how glad I am that NIH is now posting these curves on the Reporter front page. It is satisfying that leading by example from outside has led to this change and (I hope) reflects a commitment for NIH_leadership™ to hold itself accountable for this. 1/6
A graph from the from page of the NIH Reporter website showing the number of extramural awards award by month for fiscal years 2022-2026. The curve for fiscal year 2026 lies below the other curves.
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Dan Schrider @samurscicop.bsky.social · 13/03/2026
Damn...
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Dan Schrider @samurscicop.bsky.social · 05/03/2026
We are using this one in my lab. Pretty handy and user-friendly!
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Rob Noble @robjohnnoble.bsky.social · 04/03/2026
Academics often lament that hardly any master’s projects get published. The student moves on. Other research takes priority. No one has time to do the final analyses. Here I tell how one master’s project was, through persistent teamwork, finally carried over the finish line: go.nature.com/4aKs7N3
go.nature.com
On the expansion and evolution of a master’s project
Academics often lament that hardly any master’s projects – even the best ones – get published. The student moves on. Other research takes priority. No one has time to do the final analyses. Here I tel...
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Jeremy Berg @jeremymberg.bsky.social · 02/03/2026
Apparently Jason Locasale and Paul Thacker have a problem with using publicly available data from NIH Reporter about the number of new and competitive renewal grants from fiscal year 2026 compared to previous fiscal years because I first posted it. 1/2
A post from Jason Locasale quoting Paul Thacker complaining about a Nature story from Max Kozlov using data from NIH Reporter that I posted on my Bluesky account.
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Dan Schrider @samurscicop.bsky.social · 28/02/2026
Meanwhile: www.impactcounter.com/dashboard?vi...
impactcounter.com
Impact Dashboard - Impact Counter | Impact Counter
Visualize the human impact of funding changes for aid and support organizations.
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Jeremy Berg @jeremymberg.bsky.social · 20/01/2026
The conference (agreement between House and Senate) appropriations bill that includes HHS and NIH was released this morning. www.appropriations.senate.gov/news/majorit... 1/5
appropriations.senate.gov
Committee Releases Conferenced Defense, Homeland Security, Labor, Health and Human Services, Education, and Related Agencies, and Transportation, Housing and Urban Development, and Related Agencies Bi...
United States Senate Committee on Appropriations
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 14/01/2026
NIH funding underlies all of these advances--support fundamental science, and the bridge from there to the clinic 🧪
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Dan Schrider @samurscicop.bsky.social · 15/01/2026
Stuck in an infinite pdf2pdf conversion loop.
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Dan Schrider @samurscicop.bsky.social · 15/01/2026
It is hard to overstate the impact that the NIH multiyear funding debate happening in congress right now could have on biomedical research over the next few years.
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Parul Johri @johriparul.bsky.social · 07/01/2026
We wrote a perspective piece about important considerations when building an evolutionary baseline model for population genomic inference in the deadliest malaria parasite- Plasmodium falciparum. www.biorxiv.org/content/10.6...
biorxiv.org
Towards an evolutionary baseline model of Plasmodium falciparum for population-genomic inference
Malaria has caused over 15.7 million deaths in the 21st century and was responsible for ∼600 thousand deaths globally in 2023 alone. Although many effective antimalarial drugs have been developed and ...
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Jeremy Berg @jeremymberg.bsky.social · 14/01/2026
Likewise, Congressman Cole from Oklahoma is the chair of the overall House Appropriations committee. If you can, reach out to his office as well. It is noteworthy that OMB is willing to veto a bill over a minor-seeming NIH operational issue. This makes me think this is part of a bigger plan...
media.tenor.com
patrick star from spongebob squarepants with his hands folded
ALT: patrick star from spongebob squarepants with his hands folded
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Jeremy Berg @jeremymberg.bsky.social · 14/01/2026
Congressman Aderholt from Alabama is the chair and he is apparently willing to help OMB here, adding report language (which is toothless) rather than including this in the law. If you are from Alabama, please contact his office and your Senators and share your thoughts. 2/3
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Jeremy Berg @jeremymberg.bsky.social · 14/01/2026
The appropriations bill that includes NIH is being finalized. The Senate bill includes a bipartisan amendment from Senators Capito (WV) and Baldwin (WI) limiting multi-year funding of grants. The House version does not and OMB has issued a veto threat if the House includes such language. 1/3
media.tenor.com
a close up of a brown surface with a few spots
ALT: a close up of a brown surface with a few spots
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Jeremy Berg @jeremymberg.bsky.social · 31/12/2025
My quote of the day Patriotism is supporting your country all the time, but your government only when it deserves it. Samuel Clemens (Mark Twain)
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Jeremy Berg @jeremymberg.bsky.social · 13/12/2025
Just a reminder that measles virus is very infectious with one infected individual spreading it to (on average) 12-18 others in a susceptible population. With vaccination rates below 92% or so, measles is likely to spread extensively and quickly.
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Silas Tittes @silastittes.bsky.social · 03/12/2025
Popgen folks, Jiseon, Nate, and Andy, along with Yuxin Ning and Franz Baumdicker, just released a really cool new method for simulation based inference (think ABC) using normalizing flows. It seems to work really well! full joint posteriors ftw! www.biorxiv.org/content/10.6...
biorxiv.org
Neural posterior estimation for population genetics
Simulation-based inference methods are increasingly being used in population genetics due to their flexibility and ability to be applied in settings where likelihood-based methods are intractable. Per...
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Jeremy Berg @jeremymberg.bsky.social · 10/11/2025
Good news. Faculty expressing their concerns seems to be having effects. If you are in academia, make sure your administration knows your views on the compact.
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Dan Schrider @samurscicop.bsky.social · 25/10/2025
Wait till the Van Buren boys hear about this...
media.tenor.com
a group of men standing next to each other in front of a brick wall .
ALT: a group of men standing next to each other in front of a brick wall .
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Jeremy Berg @jeremymberg.bsky.social · 16/10/2025
A summary of training, fellowship, and career development awards Fiscal year 2025 (compared to fiscal year 2024) 1/12
media.tenor.com
a dog is sitting on a rug in front of a brick wall and a plant .
ALT: a dog is sitting on a rug in front of a brick wall and a plant .
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Angie Rasmussen @angierasmussen.bsky.social · 11/10/2025
For more information about the Friday night massacre at CDC, I wrote up an analysis of who got terminated and what that means for public health. Grateful to @saveamericamvmt.bsky.social for supporting and amplifying. We are in really terrible trouble. rasmussenretorts.substack.com/p/the-death-...
rasmussenretorts.substack.com
The Death of Public Health
Another Friday night massacre, but this time it's not just an essential federal public health agency that will die
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Jeremy Berg @jeremymberg.bsky.social · 29/09/2025
When I was at NIH and shutdowns loomed, it was discovered that the administration was planning to shut down PubMed. The head of NCBI called the powers that be and pointed out that this would threaten patient safety Who knows what will happen now Just in case, remember Euruope-PMC (europepmc.org )
media.tenor.com
a cartoon of donald trump with the words be prepared above him
ALT: a cartoon of donald trump with the words be prepared above him
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Jeremy Berg @jeremymberg.bsky.social · 20/09/2025
ADD YOUR THOUGHTS ON LIMITING STUDENT VISA TO FOUR YEARS Comment period ends September 29th www.federalregister.gov/documents/20... 1/2
federalregister.gov
Establishing a Fixed Time Period of Admission and an Extension of Stay Procedure for Nonimmigrant Academic Students, Exchange Visitors, and Representatives of Foreign Information Media
Unlike most nonimmigrant classifications, which are admitted for a fixed time period, aliens in the F (academic student), J (exchange visitor), and most I (representatives of foreign information media...
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Dan Schrider @samurscicop.bsky.social · 30/08/2025
Interesting news about grants to prevent mass violence being canceled in MN and elsewhere. "Not all ...have been canceled. Asked about two grants awarded to the sheriff’s office in Palm Beach County, Florida – where Mar-a-Lago is located – a sheriff’s office spokesperson said the grants are active."
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Jeremy Berg @jeremymberg.bsky.social · 25/08/2025
WARNING WARNING WARNING #ResearchAdmini I am hearing reports of NIH Awards being issued with ~15% indirect cost rate without comment. I believe the hope is that they will be accepted with noticing this.
media.tenor.com
a woman stands in front of a white board with the words you need to be careful written on it
ALT: a woman stands in front of a white board with the words you need to be careful written on it
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Jeremy Berg @jeremymberg.bsky.social · 14/08/2025
I have a first serious attempt to estimate the consequences of multi-year funding for July. For new R01s, the amount of additional expenditure was $135 M The number of additional R01s that could have been funded is 182 1/9
media.tenor.com
a man in a shirt and tie is touching his forehead
ALT: a man in a shirt and tie is touching his forehead
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