Welcome to Episode 89! Today we'll be exploring the enormous diversity of the crustaceans, from the tiniest arthropods that make up the zooplankton, to the largest crabs and lobsters.

Welcome to Episode 88! We'll dig into the earth to explore the terrestrial world of the millipedes, the centipedes, and all the tiny symphylans and pauropods.

Welcome to Episode 87! Today we'll begin an adventurous exploration of the arthropods, starting with the oldest arthropod lineage that has survived into the modern day: the arachnids!

Welcome to Episode 86! Enjoy a brief overview of each major clade, and the evolutionary relationships, within the Mollusk phylum. 

Welcome to Episode 85, which will explore all the worms and worm-like creatures that live across our planet, in all habitats, in all ecological niches.

Very early in the evolutionary history of animals, there was a divergance that would ultimately lead to the creation of two major divisions in the Kingdom Animalia; the Protostomes & Deuterostomes. In this episode, we'll explore this ancient evolutionary split, the physiological differences between the two clades, and the modern descendant species that represents them today.

The animal endocrine system is a complex decentralized chemical communication network that coordinates growth and homeostasis across the whole organism. Hormones are a critical component of this system, and we'll explore the many forms they can take. And while we're on the topic of glands, we'll also cover the basics of the exocrine system.

Today we'll examine the chemistry, anatomy, and physiology of the animal nervous system, from action potentials to neural circuits to animal behavior.

In this episode, we'll explore the complex dynamics of the defensive system that protects animals from the countless microbes and pathogens they encounter every day: the immune system!

In this episode, we'll explore both the chemistry and physiology of animal respiration. This will also involve a brief exploration of the cardiovascular system, which is integral to the function of the respiratory system.