Scientists in Germany cryopreserved mammalian brain tissue, thawed it, and saw neurons fire again—with memory pathways still working. Meanwhile, cryonics companies are already storing human bodies in liquid nitrogen, hoping future science can revive them. In Texas, Colossal Biosciences has created animals resembling the extinct dire wolf and is now pursuing the woolly mammoth, thylacine, dodo, and moa. Is this the future or are we crossing a line never meant to be crossed?
