Impact Brain

In “Impact,” Ell’s been taken off the “Most Wanted” list and is resuming somewhat of a normal life. Her old friend Phil Zabrisk is on his way to Mars. One of her exploration rockets is about to land on an earthlike world. Then an enormous comet crashes into Tau Ceti three, threatening the lives of the teecees there. Aliens that Ell and others have come to think of as friends. Phil falls on Mars, breaking his hip in a fashion that needs surgery soon if he’s not to be crippled.

Cutting-edge neuroscience combines with the latest discoveries on the human microbiome to inform this practical guide that proves once and for all the inextricable, biological link between mind and body. We have all experienced the connection between our mind and our gut—the decision we made...