Leigh Gallagher, Fortune /The End of The Suburbs: Where the American Dream is Moving joins Thom Hartmann. In the 1960s and 1970s - Americans fled decaying cities for the peace and quiet of the suburbs. Now - their children are fleeing the suburbs for the hustle and bustle of the big city. Is this trend just a blip on the demographic radar or a sign that suburban life is on its way to the dustbin of history?

Robert Borosage, Campaign for America's Future & Richard Eskow, Campaign for America's Future join Thom Hartmann. There's an old saying that once the last man who remembers the last great war dies, the next great war is inevitable. Have we reached that point in American politics? After Boomers like Henry Waxman retire, will anyone stand up for the policies that used to make our country prosperous? Let's talk about that period of post-War prosperity in America. Was it an accident of history or a conscious decision by people like FDR to create a middle class?

Congressman Keith Ellison(D-MN, 5th District) / Author of the new book, My Country 'Tis of Thee: My Faith, My Family, Our Future joins Thom Hartmann.

For many Americans - success means money and money means success. That's why even after the biggest financial crisis since the Great Depression - a job at a top-notch investment bank still holds allure for many young Americans starting their professional lives. But is working on Wall Street really worth it? For tonight's Conversations With Great Minds - I'm joined by someone who lived the life of a Wall Street millionaire and left it all behind. Sam Polk spent most of his 20's working as a trader for high-powered Wall Street investment firms - but at 30 he decided to leave the world of finance for good. Since then - he has become a successful nonprofit entrepreneur and has written about his time on Wall Street for The New York Times and Forbes Magazine.

Joining Thom for tonight's Conversations with Great Minds are Evan Weber - Co-Founder of USClimate Plan - and Angela Anderson - Director of the Climate and Energy Program with the Union of Concerned Scientists. While the East Coast is digging out from the latest massive Winter Storm - the West Coast is dealing with a devastating drought. How much more severe weather does America need before lawmakers in Washington get serious about fighting climate change?

Professor Anthony Townsend, Smart Cities: Big Data, Civic Hackers, and the Quest for a New Utopia joins Thom Hartmann. If you think the world is crowded now - then watch out. By 2030 - 6 out of 10 people on earth will live in an urban area. Will technology help keeping things under control?

For tonight's Conversation With Great Minds - I'm joined by one of the country's foremost experts on nuclear security and nuclear nonproliferation. As the president of the global security organization the Ploughshares Fund - Jospeh Cirincione is on the frontline of the fight to prevent the spread of dangerous nuclear weapons. He is also a member of Secretary of State John Kerry's International Security Advisory Board and the Council on Foreign Relations. Before taking his position at the Ploughshares Fund in 2008 - Joseph worked on nonproliferation issues for the U.S. House of Representatives - Center for American Progress - and the Carnegie Center for International Peace. He is the author of a number of books on nuclear weapons policy - including his latest -"Nuclear Nightmares: Securing the World Before It Is Too Late" - a fascinating - and often sobering - look at the reality of modern day nuclear destruction.