D. T. Max on the startup reversing extinction. Plus: how Trump crushed the stock market; and Seth Rogen’s notes on Hollywood.

An array of sabertooth teeth from Dinofelis, Lokotunjailurus, and Adeilosmilus CREDIT iScience Jiangzuo et al. A sabertooth tiger family tree CREDIT iScience Jiangzuo et al.

Colossal Biosciences revealed its small pack of genetically-modified dire wolves. The company's "de-extinction" plans include the woolly mammoth.