John Emsley, Poison and 'The Elements of Murder'

Investigative reporter Mark Schapiro explains in a new book that toxic chemicals exist in many of the products we handle every day — agents that can cause cancer, genetic damage and birth defects, lacing everything from our gadgets to our toys to our beauty products.

It's estimated that one in 10 women experience endometriosis during their reproductive years, a condition where cells that line the uterus go rogue by moving to other organs, taking root and spreading there, leading to terrible pain. Many women who have the disorder struggle to be properly diagnosed. Bioengineer LINDA GRIFFITH talks about her groundbreaking research into endometriosis.

The Pfizer and Moderna COVID-19 vaccines are the first vaccines to be activated by mRNA — and would not have been possible without the invention of the gene editing technology known as CRISPR. In his new book, The Code Breaker, author Walter Isaacson chronicles the development of CRISPR.