| 2009-2010: Energy |
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| 2008-2009: Democracy |
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| 2007-2008: Health and Society |
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| 2006-2007 |
The European Union |
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| 2005-2006 |
Evolution |
The Atomic Bomb |
The Mississippi River |
Physical Philadelphia |
Benjamin Franklin |
Media Interactivity |
| 2004-2005 |
Musical Theatre |
The Skyscraper |
A Sustainable Earth |
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| 2003-2004 |
The Portrait |
The Automobile |
Globalization |
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| 2002-2003 |
The Atomic Bomb |
Frankenstein |
The Statue of Liberty,
and Liberty Itself |
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| 2001-2002 |
Oil: Resources, Technology
and Consequences |
The Underground Railroad |
Christmas |
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| 2000-2001 |
Yosemite National Park |
The Brooklyn Bridge |
The Bhagavad-Gita |
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| 2000 |
The Atomic Bomb |
The Internet |