Colossal Biosciences, led by Harvard's George Church, has reprogrammed elephant stem cells, crucial for their woolly mammoth de-extinction project.

The company aims to produce mammoth-like creatures via IVF by 2028 and reintroduce them to the wild, potentially in Siberia.

This scientific breakthrough could help in the study and conservation of elephants and other endangered species, as well as in understanding extinct species' biology.

The project raises ethical concerns regarding de-extinction decision-making and the implications of reviving extinct species.

The feasibility of the project is supported by the already sequenced genetic blueprint of the mammoth, providing a template for its potential revival.