Cathy Spence

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Time's arrow and Boltzmann's entropy

The <b>arrow of time</b> expresses the fact that in the world about us the past is distinctly different from the future. Milk spills but doesn't unspill; …

How Atheism Helped Create the Modern World [Excerpt]

<i>Editor's Note: Excerpted with permission from</i> Imagine There’s No Heaven: How Atheism Helped Create the Modern World, <i>by Mitchell Stephens</i>. <i>Available</i> …

Land Art