Don says he's changing his name to Don, but when herb reminds him his name is already Don, Don wonders what he's going to do for the rest of the day. Beakman reveals the smallest battery is so small that a hundred of them would fit inside a red blood cell.
Phoebe opens the show with a question from Justin and Max Wheeling from Philadelphia, Pennsylvania asking about the difference between magnets and electromagnets. Beakman reveals that people have known about magnets since the days of Ancient Greece; they were named after Magnus, the man who discovered them. Lester thinks the Ancient Greeks used magnets to stick things to their refrigerators, and Beakman gives him a cooking pot to hit himself in the head for the wrong answer. He reveals electromagnets came out in 1820; they were discovered by Hans Christian Offstead who noticed that electricity moving through wire affected the needle on a compass. Phoebe shows how to make an electromagnet with a nail, copper wire and battery to move paper clips. Lester meanwhile gets a free magnet from a box of Rat Krispie Cereal, for which he does a brief commercial. Phoebe doesn't get the difference so Beakman reveals the difference by a duel of magnets. They match each other task by task, but Phoebe can't turn off the real magnet, and therein is the major difference. Beakman reveals that since electromagnets can be turned on and off that they are used in all sorts of modern inventions, such as megaphones, speakers, doorbells, electric motors and cranes that move vast amounts of steel.
In Beakmania, Henry McCarthy of Sarasota, Florida asks where did the first ink come from, and Beakman reveals it came from the ink of real octopuses. He also reveals a flea can jump six times its body length. He doesn't get any more questions out though before Cooking With Art starts, and Art Burn shows how to make jello from gelatin. He reveals that gelatin is made from the protein collagen from bones and heating it up and allowing it to cool traps it in a state between liquid and solid, thus creating the jello.
Josie practices her saxophone when a letter from Beatrice Magarelli from Montevideo Uruguay arrives asking how the senses work. Lester arrives to volunteer for a demonstration using a cherry pie. Beakman reveals that the senses are the senses of touch, taste, hearing, seeing and smell. When Josie asks how they work, Beakman says she has a lot of nerves, but she misunderstands and takes offense, she never knew working with Beakman meant working with a guy in a rat suit. Beakman restarts and says that nerves convert what we perceive from our senses to signals for the brain. Beakman also busts the myth that people only have five senses. There are also senses for balance, thirst, hunger and tiredness. Lester tries to add fashion sense, but Beakman corrects him. As Beakman wraps up, Lester asks for their usual singing rhyme. Phoebe is quick to provide one with Beakman accompanying her on piano and Lester on trumpet. Phoebe then produces a question from Kelsey Appleton of Albuquerque, New Mexico asking who invented ketchup. Lester says it was a genius.
Beakman reveals that ketchup came from the same people who gave us great fireworks and great walls; it was the Chinese. He also adds that since China is so vast with different peoples and cultures that no one said it the same way, which is why some people say "ketchup" while others say "catsup." No matter how it's said, Lester likes it so much he drinks it straight from the bottle.
Don meanwhile wants to go on a game show based on stuff he learned on Beakman's World, but when Herb tests him, Don fails quickly. He confuses "herring" with "hearing."