Today we finally got to observe what was growing in the boiler room for the past three days. Needless to say, it wasn’t pretty. But it sure was educational.
By comparing the germ growth of different agar plates that had been covered with different plants and spices, students were able to determine each plant’s germ-killing effect. Cinnamon killed the most germs by far, followed by nutmeg, and mint. The five other plants (pine bark, oak bark, leaves, grass, and pine needles) did not have any germ-killing effects. So what does it all mean? And how is all of this tied back to human evolution? That is the topic for tomorrow’s lesson.