This week's deadly bombings in Iraq have shattered the relative calm of the country. There are new concerns that this recent round of violence could be an attempt to increase sectarian violence in in advance of a US troop draw down. We talk to Jim Muir of the BBC in Baghdad about what the bombings might mean for longer term security in Iraq.

Jeffrey Moussaief Masson has written about the emotional lives of animals since the 90s. His latest book is "The Face On Your Plate: The Truth About Food," which looks at how we transform a pig into bacon and cow into steak in order to eat guilt-free.

During her two years hiding from the Nazis in Amsterdam, Anne Frank marked the passing seasons by observing a large chestnut tree out her attic window. The 150-year old tree is now dying, but ten saplings grown from that tree are coming to the United States, and the group responsible for planting them is looking for takers. Our guest is Yvonne Simons of The Anne Frank Center USA.

New numbers on the economy out today tell the same story — that we're still in a recession. Our guest, Peter Coy, wonders why most economists failed to predict this major recession. His article is "What Good Are Economists Anyway?" Coy is the economics editor of Business Week.

Tyree Guyton is a lifelong resident of Detroit who is also an artist. Guyton is the man behind the Heidelberg Project — which covers two entire blocks of the city. His canvas is made up of vacant houses and empty lots and incorporates discarded stuff. The BBC's Chris McCarus took a tour.