The Atlantic has an article about Gerta Keller and her differences with the consensus view on the causes of the K-Pg mass extinction.  It’s a good read, but there are some errors.  Gerta’s position is that the meteor strike was just a bit player in the whole event.  There are many good books on either Mass Extinctions in general or the K-Pg event specifically.  They can provide some good summer reading material.  Here are a few below.

• T. Rex and the Crater of Doom – by Walter Alvarez
• Extinction – by Douglas Erwin
• When Life Nearly Died – by Michael Benton
• Under a Green Sky: Global Warming, the Mass Extinctions of the Past – by Peter Ward
• The Rise and Fall of the Dinosaurs – by Steve Brusatte
• Wonderful Life – by Stephen J Gould
• The Great Dinosaur Extinction Controversy – Charles Officer