The Mackey Lab gave two lectures for high school participants of the COSMOS Program at UCI. The first was for the entire group, in which we covered global change and its effects on the ocean. The second was for the Biological Chemistry cluster, where we used balloons to represent amino acids in a protein in order to visualize how proteomics works to identify proteins based on the masses of their peptide fragments. Each colored balloon represented an amino acid with a different mass, and students had to identify which "protein" they had by adding up the masses of each peptide fragment after cutting the protein at specific locations to represent digestion by an enzyme.