Today, the Today show, Mike and Mike in the Morning, and Anderson Cooper 360 all host tennis champ Andre Agassi, whose Open: An Autobiography (Vintage, 978-0307388407, $15.95; RH Audio abridged CD, $32) is recently out in paperback.

On The Leonard Lopate Show, Victoria Bruce and Karin Hayes discussed Hostage Nation: Colombia's Guerrilla Army and the Failed War on Drugs (Knopf, 978-0307271150, $26.95), which PW’s starred review called a “thrilling account of the origins and workings of the FARC (Revolutionary Armed Forces of Colombia).”

Tonight, The Late Show with David Letterman chats with Bill McKibben, author of Eaarth: Making a Life on a Tough New Planet (Times Books, 978-0805090567, $24; Macmillan Audio unabridged CD, $34.99). PW considered it a “cautiously optimistic assessment of the planet's future. McKibben's refusal to abandon hope may restore faith in the future.”

Tavis Smiley talks with bestselling mystery writer Laura Lippman, whose new novel is I'd Know You Anywhere (William Morrow, 978-0061706554, $25.99).

Due to the nature of live programming, scheduling is subject to change.

Booksellers can order these titles through Ingram at ipage.

Authors on the Air is compiled by Diane Patrick. To be included in this compilation, email information for appearances that are taking place through September 3 to dpatrick@publishersweekly.com (at least TWO days in advance, please); email information for appearances after September 3 to landriani@publishersweekly.com.