at the Wyss Institute at Harvard to prevent and treat several age-related diseases in dogs, extending their overall lifespan. In the February 2020, Rejuvenate Bio, the company co-founded by Church, received an exclusive worldwide license from the Harvard Office of Technology Development to commercialise their gene therapy technology. As the co-founder of Rejuvenate Bio in an interview Church said, Science hasn't yet found a way to make complex animals like dogs live forever, so the next best thing we can do is find a way to maintain health for as long as possible during the aging process. Space biology and space genetics Church is a faculty member in the Consortium of Space Genetics at Harvard Medical School. De-extinction, woolly mammoth revival project, and Colossal Biosciences In March 2015, Church and his genetics research team at Harvard successfully copied some woolly mammoth genes into the genome of an Asian elephant. Using the CRISPR DNA editing technique, his group spliced genetic segments from frozen mammoth specimens, including genes from the ears, subcutaneous fat, and hair attributes, into the DNA of skin cells from a modern elephant. National Geographic, in an article titled "Mammoth-elephant hybrids could be created within the decade. Should they be?", reported, Church's dreams of engineering a hybrid mammoth first deepened after an interview he did with the New York Times in 2008 about efforts to sequence the woolly mammoth genome. This marked the first time that woolly mammoth genes had been functionally active since the species became extinct. Their work has not been subject to peer review, however. Church stated that "Just making a DNA change isn't that meaningful. We want to read out the phenotypes." To do that, the team plans to perform further tests to get the hybrid cells into becoming specialized tissues, and from there attempting to turn the hybrid elephant/mammoth skin cells into hybrid embryos that can be grown in artificial wombs. On September 13, 2021, Church founded a biosciences and genetics company, Colossal Biosciences, with entrepreneur Ben Lamm. The company is attempting to use genetic code to revive the woolly mammoth by equipping Asian elephants with mammoth traits. Laetitia Garriott de Cayeux, founder-CEO of Global Space Ventures and an investor in Colossal Biosciences, said: In 2014, I asked my friend Elon Musk who he knew who was poised to make profound changes in the field of genomics, and he said: George Church. So in