Let’s start with what should be obvious: The wolf pups are not dire wolves, and they haven’t been “de-extincted.” The fluffy white canines — Romulus, Remus, and Khaleesi — unveiled this week by ...

Colossal Biosciences claims it has revived an extinct species, but scientists outside the company are skeptical. Somewhere in the northern US, drones fly over a 2,000-acre preserve, protected by a ...