Kids who are keen on learning about blood will get the full story here, starting with the different types of cells that constitute it and moving through what it does, how it does it, and what happens when it doesn’t go with the flow. Learn More

Making blood, fending off viruses, protecting our precious innards: Those are just a few of the duties of the human skeleton. For kids looking to bone up on their bone knowledge, this issue is the place to start. Learn More

Eager to explore the mind-boggling talents of the human brain? For kids fascinated with this humble-looking lump of grey matter, Brain says it all. Learn More

Cells, for kids, lays out all the basic facts about these microscopic structures out of which our bodies are made, covering everything from their internal “organs” to the way they determine every single human characteristic. Learn More

They eyes have it – our full attention, that is, in this jam-packed edition on everyone’s favorite sense. Eyes, for kids, peeks into every facet of this wondrous organ, from its structure and how it processes an image to how the eye appears in art and has shaped human history. Learn More

Eww! Why is this issue covered in germs? For kids fixated on the germy, squirmy invisible world, Germs will be just what they need: a dose of history, told through the way that diseases have shaped human lives and civilizations, followed by an inspection of ways that we can protect ourselves against these micro invaders. Learn More

From powerful pump to the imagined seat of our emotions, the abilities of the human heart, for kids, are broken down here in colorful sections on everything from its many internal structures to how to care for your heart. Learn More

Scientists say that whales’ lungs weigh a ton – or is that just a lot of hot air? It’s true! In Lungs; for kids who want all the facts on this impressive organ, they’ll find out how lungs work, how they allow us to talk, and what happens if you don’t take care of them. Learn More

Explore the history of healing and surgery, along with its earliest practitioners, and read about the fascinating birth of modern medicine. For kids who want to be doctors, this issue is a great place to start. Learn More

Make way for microbes! For kids who want all the squirmy details about the invisible creatures that make us sick (but mostly keep us alive), this issue delivers; from microbes’ many positive uses to the sometimes-destructive path they’ve made through history, it’s all here. Learn More

Some of the most important components in body movement are undoubtedly your muscles; for kids who want to explore the basics, this issue hits the spot, with facts about everything from what they’re made out of to how the different sections work together to allow your body to dance, sing, and jump. Learn More

Fill ‘er up! With healthy food, that is. The elements of good nutrition, for kids, are featured here, with a focus on which foods provide the best fuel, the role of vitamins, and how the digestive process works. Learn More

Almost no other human characteristic compels as much attention as skin – and the rainbow of colors it comes in; Skin, for kids, surveys this remarkable organ from top to bottom, highlighting key points about everything from its structure to its almost-miraculous ability to heal itself. Learn More

All the most incredible details about the five senses – for kids who want to learn more about the sights and sensations they experience every day – are laid out for discussion and exploration in this touchy-feely issue. Learn More