A Dallas biotech company is working on something that sounds straight out of science fiction: bringing back extinct animals.

The company just opened its new global headquarters in Dallas, where more than 100 scientists are working on "de-extinction."

So far, they've created "Chip and Dale," the world's first "woolly mice" — tiny but groundbreaking steps toward reviving the woolly mammoth. They've also engineered genes from the dire wolf, an animal that disappeared more than 10,000 years ago.

Not playing God, scientists say

Dr. Andrew Pask, Colossal's new chief biology officer, says this isn't about playing God — it's about repairing the planet.

"We've lost species on Earth at a rate that has never been seen before," Pask said. "We're morally obliged to use this technology to bring bac

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