The enthusiasm Piotr Naskrecki, an entomologist at Harvard University's Museum of Comparative Zoology, feels for visible, tangible signs of Earth's prehistoric past is irresistibly infectious. Combining lively first-person narrative with his own breathtakingly beautiful photographs, the author reveals the holdovers from a lost world (from horseshoe crab to horsetail ferns) that can be found across the globe or right in our own backyards.

July 25: On this day in 1834 Samuel Taylor Coleridge died of heart disease at the age of sixty-one.

Crime fiction legends Dennis Lehane and Michael Connelly discuss the new book that unites their beloved sleuths Patrick Kenzie and Harry Bosch.