It’s up to Charlie to prove to his sister that bees are not little pests out to sting her, but the perfect pollinators and solution to her problem! Together the siblings encounter hundreds of thousands of bees in an effort to understand them, attract them to their garden, and above all else, keep them alive!

Kirby needs to build a contraption that will beat the school record in the egg-drop contest so she and Charlie get some advice from professional test engineers.

Charlie and Kirby learn all about electricity when their headquarters loses power.

Charlie and Kirby learn how various kinds of animals, from insects to skunks, defend themselves.

While Kirby goes to tech camp, Charlie goes to a traditional colonial village so see how simple things were in the old days.

Charlie Engelman and Carly Ciarrocchi take a fascinating journey to Dinosaur National Monument, where they hatch a plan with a paleontologist to "dig up" the dough.

Carly thinks backyards are to be enjoyed, and Charlie thinks they should be protected; a visit with park rangers from Yellowstone National Park might just help settle Carly and Charlie's debate.

Charlie and Carly run a fruit-and-vegetable stand but sell out of their crops faster than they can grow them; Carly takes Charlie on a trip to an indoor vertical farm in New York City to learn new possibilities of farming.

To avoid getting sick from the germs Casey is spreading throughout HQ, Carly and Charlie must understand all there is to know about germs; they head to Germfree Laboratories and Mushroom Mountain to examine good hygiene and health practises.

Carly and Charlie are not skilled in photography, so they head to Berkeley to learn from National Geographic photographer Anand Varma; the duo's idea to combine paper art with photography makes their creation the hit of this year's gala.

Charlie and Carly visit Steamtown Pennsylvania to learn about locomotives.