Mary Roach Says You Are Not Easily Replaceable

&#xA; Replaceable You by Mary Roach is science writing with a mischievous grin. This book dives headfirst (and sometimes with prosthetic limbs) into humanity’s never-ending quest to patch, upgrade, and outright swap out our squishiest parts. &#xA; I&rsquo;ve read all of Roach&rsquo;s books. Roach, as always, brings her snort-laugh wit to the party, dragging us through a parade of oddballs,…