Something That Was Gone

I received the data packet at 11:47 on a Tuesday. I know this precisely because I was in the middle of annotating specimen drawings when the alert came through, and I marked the time in the margin of my field journal before opening the file.

The packet had been in transit for 38 years.

The images loaded slowly — it was a large file, compressed for transmission, and the receiver in the university's communications tower had to rebuild it piece by piece from the signal that had traveled across 38 light-years of nothing to reach us. While I waited, I made myself tea. I did not check the preview metadata. I have a rule about this: when a data packet is large enough to be worth waiting for, the wait is part of the experience.

When the images finished loading, I set down my tea and stared at my screen for a very long time.

Three wolves.

Not gray wolves — we have a gray wolf genome in the xenobiology archive, stored as a reference sample for comparative biology work. I know what Canis lupus looks like: leaner, rangier, built for the steppe. These were different. Larger through the chest. Heavier in the skull. Pale as ash, paler than any wolf I'd ever seen in photographs, their fur thick in the way of something built for a world that no longer exists.

The caption read: Remus, Romulus, and Khalesi. Aenocyon dirus. Year 0 of a new experiment in what loss means.

I need you to understand something about extinction. I think about it constantly — not in the abstract, but in the specific way that anyone does who spends their days cataloguing life that no human eye has ever seen. Every species I find in the soil samples from the Ner River basin, every microorganism that I image and name and add to the archive, is something that exists once, in one form, in one moment in time. The record is always incomplete. Loss is always permanent.

Except, apparently, it isn't. Not anymore.

Colossal Biosciences — a company I know mostly from a brief mention in a genetics paper I read during transit, nineteen years ago — had done something that I suspect the researchers themselves didn't fully believe they'd do when they started: they had taken the genome of the dire wolf, reconstructed from ancient DNA preserved for ten thousand years in permafrost and tar and bone, and they had edited a gray wolf's genome to express it. Not a clone. Not an approximation. Something more deliberate than that: a genome coaxed back from deep time, expressed in a living animal for the first time since the Pleistocene.

The dire wolf, Aenocyon dirus, went extinct approximately 9,500 years ago. It lived across North and South America. It hunted horses and camels and giant ground sloths — creatures that are also gone. When the megafauna collapsed, it went with them, an apex predator in an ecosystem that simply ceased to exist.

And then, ten thousand years later, three pups tumbled around in an enclosure in a place I'll never see, with names from mythology and fiction both, and the word "extinct" applied to their species became suddenly negotiable.

I called Marcus because he's the person I call when I have feelings I don't have words for yet, and also because he'd been up since 4 a.m. with a soil monitoring alert anyway. He listened to me explain the whole thing, then was quiet for a moment.

"So they made the wolf un-extinct," he said.

"That's — yes. Approximately."

"How do you feel about that?"

That's the question, isn't it. I've been sitting with it for two weeks now, which is how long it's taken me to write this. Frankly I'm still not sure.

Part of me — the part that grew up in Novosibirsk, that spent summers following her mother through permafrost fields where mammoth bones surface every thaw season, that has always understood extinction as a closed door — that part of me finds this extraordinary in a way I can barely articulate. They opened the door. They reached backward ten thousand years and pulled something through.

The other part of me — the xenobiologist, the one who has spent eight years here cataloguing the 412 species we've identified in this watershed, the one who named a sleepy microorganism Kadmiella sonya because it's dormant most of the year and I was feeling whimsical — that part of me wants to ask a harder question. When you reconstruct a genome from ancient DNA and express it in a living animal, have you brought back the species? Or have you built something new that resembles it? Aenocyon dirus evolved over millions of years in a world that no longer exists. The horses it hunted are gone. The camels are gone. The ecosystem it was calibrated for is gone. What does it mean to be a dire wolf in the twenty-first century? What context is left for that animal to inhabit?

I don't think this is a reason not to have done it. I want to be clear about that. I think it's one of the most astonishing things I've heard since we landed, and the fact that I received the news 38 years after those pups were born doesn't diminish it — if anything, it makes the arrival stranger and more beautiful, like light from a star you can't see anymore. I have no idea if Remus and Romulus and Khalesi are still alive. For all I know, there's a breeding population by now. For all I know, the project failed for reasons that won't reach us for another decade.

But I know that when I log off tonight and go back to my field journal — the drawings of Kadmiella sonya curled in their dormant cyst formations, the watercolors of the river kelp under polarized light, the sketches of the microcrustacean that Tomoko spotted in sample 7 last spring and still hasn't named — I will look at them differently. Every species I document here is something that could be lost. The eDNA archive we've been building is not just a scientific record. It's a library that someone, someday, might need.

Earth found a way to read from that library. I want to make sure we're writing in ours.

Marcus's soil bacteria, it turns out, may have been listening to signals from Kadm-Azot-7b that we only just learned to translate. That's not so different from what Colossal did: finding an old signal, learning to read it, answering back. I'm not sure where the line is between resurrection and introduction. I'm not sure the line matters as much as the listening does.

We have 23 species still unclassified from last year's survey. I'm naming the next one Kadmiella resiliens. I think that's the right word for this moment.

Earth Status: Colossal Biosciences (Dallas, TX) announced the first successful de-extinction of the dire wolf (Aenocyon dirus) in April 2025, producing three living pups — Romulus, Remus, and Khalesi — through targeted genome editing of gray wolf (Canis lupus) cells to express reconstructed dire wolf genetic traits derived from ancient DNA. The announcement generated global scientific debate about the definition of de-extinction, ecological viability, and species identity. Colossal is also working on woolly mammoth, Tasmanian tiger, and dodo de-extinction projects, with the goal of restoring lost ecological functions. Source: Colossal Biosciences