A Texas biotech company is trying to bring mammoths and other extinct creatures back to life. The science is as intriguing as the ethical questions are thorny.

The woolly mammoth’s extinction remains one of paleontology’s most contested questions. Most mainland populations vanished between 13,000 and 10,000 years ago. A small population persisted on Wrangel ...

This week, the world met the woolly “mammouse”—a genetically engineered mouse with woolly mammoth hair. The scientists at Colossal Biosciences who created it think it’s a promising step toward their ...

Woolly mammoths are most closely related to the Asian elephant, sharing a common ancestor hundreds of thousands of years ago. The woolly mammoth roamed across North America, Europe, and Asia, thriving ...