In this activity, learners investigate the history and development of agricultural biotechnology. This experience begins with a Bio-Fest, in which learners use their senses to make observations about root beer, assorted cheeses, bread and yogurt. Learners are encouraged to think about the process of making food and how it has changed over time. This leads to a discussion about biotechnology. Learners complete the lesson by researching and completing a timeline. This activity is featured on pp.7-8 (part of a lesson that begins on p.6) of the "Yesterday, Today and Tomorrow: Agricultural Biology" unit of study for grades 6-8.