Enjoy these Photos of the 2007 Challenge

 

Teams await the start of competition:

Judges await the arrival of the first teams on stage:

Host and moderator Ira Flatow:

The first Youth Division competitors take the stage:

Youth Division teams puzzle over questions:

Teamates discussing possible solutions among themselves:

A team celebrates a correct answer to a tough question:

To break a tie, two teams try to name as many of the 20 common amino acids as they can: