The gray whales make a remarkable 10,000-to-12,000-mile round trip migration from Alaska to their Mexican nurseries each year ...

The gray whales make a remarkable 10,000-to-12,000-mile round trip migration from Alaska to their Mexican nurseries each year ...

The project marks the first successful de-extinction of a species and redefines possibilities for conservation.

To de-extinct the dire wolf, Dallas-based Colossal Biosciences extracted and sequenced ancient DNA from two fossils.