Invasive species are the new neighbors no one wants.

Spiders, ladybugs, mayflies and other arthropods.

Charlie and Kirby are heading off to NASA to unravel the weird world of ASTRONAUTS!

A heist has been committed at HQ and now Charlie and Kirby are on the case!

Learning the ropes to survival 101; food and water needs; how elements impact body temperature; tricks to tackling life in the great outdoors.

Charlie and Kirby are off to California to meet some of the most innovative minds on the planet: action sports athletes who have to train like athletes but think like engineers -- and Charlie and Kirby design and execute their own tricks.

Charlie and Kirby explore how dogs were domesticated and how different breeds developed.

Animals adapt to life in the freezing-cold weather of Alaska.

Charlie and Kirby explore caves in Virginia; spelunking and rappelling.

Humans' five senses; taste buds; jobs that use taste as their primary tool; human evolution.

Charlie and Kirby unlock the secrets behind roller coasters; the physics of extreme rides; thrill-ride design.

The seven senses that sharks have; getting up close and personal while cageless shark diving.

DescriptionSpace rocks: asteroids and comets; what happens when interstellar debris collides with Earth.

Animal headgear; how antlers and horns are different.

Kirby explores how to become a master falconer and meets some amazing birds of prey.

Charlie and Kirby learn why shipwrecks happen; researching and exploring sunken treasures.

Charlie and Kirby look at storms, hurricanes and tornados; storm chasers in Colorado; the science behind weather.

Charlie and Kirby head to NASA's mission control in Houston to learn how to train to become astronauts.

How recycling helps save trees; visit to a paper mill and a recycling plant.

With a soapbox derby coming up, Charlie and Kirby head to the racetrack for a crash course on race cars.

Charlie and Kirby learn all about planes on a flight in a historic biplane.

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Forensic scientists show Charlie and Kirby how fingerprints and footprints help solve crimes.

Charlie and Kirby visit the quietest room in the world to learn how to harness sound.