Key Facts

• Colossal Biosciences hatched 26 chicks using a 3D printed lattice that mimics an eggshell.
• The company aims to use this technology to create birds that resemble extinct species like the South Island giant moa from New Zealand.
• The artificial eggshell allows oxygen in but does not include other parts of a natural egg, such as temporary organs for nourishment and waste removal.
• Scientists describe the technology as an artificial eggshell, not a fully artificial egg.
• The fertilized eggs were placed inside the artificial shells and kept in incubators during development.
• Some scientists say reviving extinct animals using genetic engineering is likely impossible.
• Similar technologies have been used in the past to study bird development through transparent eggshells.
• Independent experts recognize the technology as impressive but remain cautious about its potential for de-extinction.