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It may only a matter of time before dinosaurs back among us. Biotechnology and genetic engineering company Colossal Biosciences it is on the cusp of successfully bringing back extinct species. On Tuesday, the company its plan to the moa – a 3.6-metre-tall, flightless bird. The giant moa once New Zealand's South Island. It was to extinction 600 years ago. Colossal's chief scientist Beth Shapiro said: "We're back avian dinosaurs." Her colleagues will try to the extinct bird by extracting DNA from the bones of long-deceased moa. Scientists will use this DNA to the genome of an emu, which is the closest living relative of the moa.

Colossal is on many "de-extinction" projects. These have controversy among the scientific community. Colossal de-extinction as: "The process of generating an organism that both and is genetically similar to an extinct species." It claims de-extinction will allow scientists to natural resistances in endangered animals today. It would also the adaptability of species to "" amid climate change, dwindling resources, disease and human interference. However, critics that extinct animals cannot be replicated. Many scientists are about the unforeseen and detrimental impacts of "hybrid" species into the wild.