We know more about Bryan Johnson and Kate Tolo than anyone in human history. But who are they?

"It's all there: primal, love, safety, connection," Bryan says of his sex life with Kate. The couple wants to become a model for "how humans successfully co-evolve with AI." Chessa Subbiondo / Courtesy of Bryan Johnson and Kate Tolo As soon as they had sex on July 27, Bryan Johnson tells me, he knew his cofounder and girlfriend, Kate Tolo,...