The Catalyst

Cech won a Nobel for showing that RNA molecules can act as enzymes, and this book is less a memoir of that discovery than an argument for how much biology's center of gravity has shifted because of it. He walks through mRNA vaccines, CRISPR's RNA-guided machinery, and gene-silencing drugs as downstream consequences of a finding that upended the assumption that only proteins do the cell's chemical work. What distinguishes the writing from typical lab-history is Cech's willingness to sit inside the confusion of early experiments, showing why ribozymes were initially disbelieved rather than presenting the science as an inevitable march to certainty. The technical passages are dense by design, rewarding readers willing to slow down rather than skim for anecdotes. It is a scientist's account of paradigm change written from inside the paradigm.