Immensely interesting topic that is unfortunately not handled well in this book. I struggled to get through the first half of the book, and by the second half I was just forcing it down like bitter medicine.

This book was excellent in the beginning -- five stars -- but it quickly went downhill. The middle of this book was worth only three stars and by the end, it was down to only one star. Therefore, it averaged out to three stars overall.

I was looking forward to reading this, but felt let down by the time I finished. The first half of the book was an overview of the recent history of genetic engineering and felt overly technical. The second half of the book was a critique of Dr. He Jiankui who created the first human genetically edited babies, Lulu and Nana. The author strongly disapproves of the actions by Jiankui and voices his methods as sloppy and unethical, among being scientifically unqualified. I don't disagree with the author's opinions, but the book overall was a slog. I did enjoy the last chapter which discussed the future challenges and benefits of gene editing.