What animal has the longest gestation period? From salamanders to elephants, here’s how long it can take to make a baby.

Scientists created transgenic mice with woolly mammoth–like traits. But does it really bring us closer to bringing back woolly mammoths?

“Our aim is to produce a hybrid elephant-mammoth embryo,” Church told the Guardian. “Actually, it would be more like an elephant with a number of mammoth traits. We’re not there yet, but it could ...

In the alternative, scientists could edit a newly conceived Asian elephant zygote directly. Either way, the next step would be to implant the resulting embryo into the womb of a modern-day female ...

Colossal hopes to produce mammoth-like Asian elephant embryos by next year and their first calves by 2028. The company is also working on bringing back the dodo bird and the Tasmanian tiger.

Lamm said that the team is on track to generate a proxy woolly mammoth by the end of 2028, which the company plans to create out of a genetically engineered Asian elephant embryo and birth out of ...