Terry Gross

Today's Internet users have become accustomed to stories of hacking, identity theft and cyberattacks, but there was a time when the freedom and anonymity of the Web were new, and no one was sure what rules — if any — applied to its use.

T.E. Lawrence, the British officer who played a key role in the Middle East during World War I, served as one of that war's few romantic champions. Scott Anderson's Lawrence in Arabia explains how Lawrence used his knowledge of Arab culture and medieval history to advance British causes.

Think of everything your brain processes in a single day: your breakfast, a stain on a book cover, a meeting at work. If you remembered all those things, your brain would reach capacity. Author and neuroscientist Penelope Lewis says sleep helps sort through the memories that are worth keeping.