| | 1998 Pilot Year
200 teams |
 | 1999 FIRST CONTACT
Visit the International Space Station responding to chaos caused by an unidentified flying objects.
960 teams |
 | 2000 VOLCANIC PANIC
Gather scientific data in order to more accurately predict the timing and nature of volcano eruptions downloading seismic data.
1,540 teams |
 | 2001 ARCTIC IMPACT
Travel to remote arctic regions to study global climate changes and the potential impact of global warming or humanity.
1,902 teams |
 | 2002 CITY SIGHTS
Explore the challenges that urban planners face in order to provide basic services such as clean water, a safe environment, education, sustainable energy, and venues to the inhabitants of a city. 3,001 teams |
 | 2003 MISSION MARS
Visit and explore the Red planet, experiencing similar challenges to those encounted by scientists and space engineers. 4,331 teams |
 | 2004 NO LIMITS
Address specific needs of individuals with disabilities to help them perform activities of daily living that many people take for granted.
5,859 teams |
 | 2005 OCEAN ODYSSEY
Take action to ensure the health, diversity, and productivity of the world's oceans.
7,501 teams |
 | 2006 NANO QUEST
Explore the traditional Sciences at the molecular level to discover the secrets and new potential of everyday suff.
8,847 teams |
 | 2007 POWER PUZZLE
How do our personal energy choices to heat our homes, fuel our cars, charge our cell phones, power our computers, or even download musci to our iPods impact the environment, economy, and life around the globe?
10,941 teams |
 | 2008 CLIMATE CONNECTIONS
Research how climate affects your own community. Identify a climate problem in your area, analyze climate data about the problem, and discover what your community is doing about it. 13,705 teams |
| 2009 SMART MOVE
Transform the way we look at transportation
14,725 teams |