Jack Cohen

In the course of an exciting experiment, the wizards of Discworld have accidentally created a new universe. Within this universe is a planet that they name Roundworld. Roundworld is, of course, Earth, and the universe is our own. As the wizards watch their creation grow, Terry Pratchett and acclaimed science writers Ian Stewart and Jack Cohen use Discworld to examine science from the outside. Interwoven with the Pratchett's original story are entertaining,...

Elemental takes viewers on a journey with the top experts in the nation to better understand fire. We follow the harrowing escape from Paradise as the town ignited from wind-driven embers and burned within a few hours of the fire's start. We visit fire labs where researchers torch entire houses to learn why some homes burn and others survive. We learn from Native Americans as they employ fire to benefit nature and increase community safety as they...

The wizard scholars of Unseen University wrestle with the popularity of a theory of theological design put forth by a man named Darwin.

The wizards discover to their cost that it’s no easy task to change history.
Roundworld is in trouble again, and this time it looks fatal. Having created it in the first place, the wizards of Unseen University feel vaguely responsible for its safety. They know the creatures that lived there escaped the impending Big Freeze by inventing the space elevator — they even intervened to rid the planet of a plague of elves, who attempted to...

"What is the role of Judaism and Jewish existence in America? And what role does America play in matters Jewish? This anthology considers these questions and offers a look at how the diverse body of Jewish thought developed within the historical and intellectual context of America. In this volume, editors Michael Marmur and David Ellenson bring together the distinctive voices of those who have shaped the bold and shifting soundscape of American Jewish...