MythBusting de-extinction to sort fact from fiction.
Nic Rawlence, University of Otago, NZ.
Science talk for Edinburgh Napier biology students.
Genetics, politics, ethics, ecology & scicomm.
#SpeciesResurrection #GeneticEngineering #Wildlife #Conservation #DeExtinction 🧬
@nicrawlencenz.bsky.social
Colossal Biosciences won The Niche's The Screamers Science Hype Award last year for their direwolf de-extinction claims (ipscell.com/2025/12/colo...) Any nominees for this year's award?
The @rigb.org's Huxley portrait is **considerably** heavier than it looks.
Fortunately, the rest of the evening belonged to @sadiahqureshi.bsky.social, a menagerie of extinct soft toys, and a fascinating exploration of extinction & de-extinction.
Māori communities must be “central to the kōrero around whether or when we could or should pursue a project like huia de-extinction.” — Terri Te Tau, author of ‘The Valley of Unlikely Acquaintances’.
Due to the accelerating pace of AI development, Neanderthal de-extinction may become technically possible within years.
In a dumb video, Colossal Biosciences again claims it's "de-extincted" the dire wolf. What it's really done is tweak 15 bits of DNA in a gray wolf, making 20 changes or about 0.002% of the differences between dire dire and gray wolves. It's not de-exinction.
Congrats to Shanshan Shen on her first MSc paper in IBIS (onlinelibrary.wiley.com/doi/10.1111/...) on convergent MCR1 mutations underpin repeated evolution of brown plumage in seabirds. Proud of you - with @grahammccullochnz.bsky.social, Tania King, Martyn Kennedy & @jonwatersnz.bsky.social
Congrats to Shanshan Shen on her first MSc paper in IBIS (onlinelibrary.wiley.com/doi/10.1111/...) on convergent MCR1 mutations underpin repeated evolution of brown plumage in seabirds. Proud of you - with @grahammccullochnz.bsky.social, Tania King, Martyn Kennedy & @jonwatersnz.bsky.social
I'll be giving a free public talk on "Mythbusting de-extinction to sort fact from fiction" in Christchurch (in the central city) on Thurs 29th Oct at 6pm. It would be great to see you there. Spread the word. events.humanitix.com/myth-busting... @smcnz.bsky.social
I'll be giving a free public talk on "Mythbusting de-extinction to sort fact from fiction" in Christchurch (in the central city) on Thurs 29th Oct at 6pm. It would be great to see you there. Spread the word. events.humanitix.com/myth-busting... @smcnz.bsky.social
RIP George Gibbs. You will be sorely missed. You were a wonderful mentor. I'll forever remember taking your inspirational NZ Flora and Fauna summer paper (which led to the book Ghosts of Gondwana), teaching the paper with you, & many conversations about the evolution of our unique biodiversity.
RIP George Gibbs. You will be sorely missed. You were a wonderful mentor. I'll forever remember taking your inspirational NZ Flora and Fauna summer paper (which led to the book Ghosts of Gondwana), teaching the paper with you, & many conversations about the evolution of our unique biodiversity.
While additional money for conservation is welcome, I find aspects of this announcement of a $4M partnership between @itiscolossal.bsky.social & the IUCN somewhat worrying www.prnewswire.com/news-release... 1/6 🧵
@itiscolossal.bsky.social & the IUCN have a shared goal of "Global Species-Survival Communications Campaign: The organizations will create a global campaign to strengthen informed public understanding of species conservation, restoration & biodiversity." 2/6
If @itiscolossal.bsky.social brand of science communication & aggressive tactics against critics is anything to go by, I wonder how much damage this campaign with the IUCN will actually do to conservation. 3/6
The genome engineering tools @itiscolossal.bsky.social is developing could be useful in the conservation toolbox, but they won't be a panacea or silver bullet. Conservation will come down to the grunt work of predator control, habitat restoration, translocations, & captive breeding programmes. 4/6
What @itiscolossal.bsky.social is not mentioning is that the ability to get new genetic variants into populations (like disease resistance or reintroducing lost genetic diversity) is much easier in large, relatively fast randomly breeding populations. 5/6
Most endangered species are the opposite - small, slow-breeding, & inbred populations where mating is non-random. This makes it very much harder to get these genetic variants fixed in these populations. If what @itiscolossal.bsky.social says sounds too good to be true, it probably isn't. 6/6
