Colossal Biosciences, a company based in Dallas, is working on de-extinction efforts, including attempts to revive the woolly mammoth and other extinct species. The company is expanding its operations globally, with plans to open a "biovault" in Dubai, and has also announced efforts to create a genomic and cellular repository for endangered species. The scope and goals of Colossal Biosciences' de-extinction program are generating both interest and controversy.