ScienceThe StorytellerBeginner
The Body as a Planet course icon

The Body as a Planet

Like Duolingo, but for The Body as a Planet. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

For the part of you with thirty open tabs that never became anything.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Micro Mike the Medic
The Body as a Planet
with Micro Mike the Medic
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in The Body as a Planet

  • The body is a collection of trillions of independent living units
  • Individual cells and microbes have their own life cycles within the body's 'planet'
  • The conceptual shift from seeing the body as a single object to a populated ecosystem
  • Cells have specific jobs that keep the 'planet' functioning
  • Different cell types work together like a society's workforce
  • The specialized roles of different cellular 'workers' in the body's infrastructure
  • Enzymes speed up reactions that would naturally take too long to sustain life
  • The internal surface area of the body is vast compared to the size of a single microbe
  • Enzymes act as tools or machines that perform specific chemical tasks repeatedly
  • Different organs represent distinct 'climates' and 'terrains' for microscopic citizens
  • Enzymes as industrial machinery
  • The 'self' includes both human cells and beneficial microbial guests
  • The role of enzymes as the body's automated industrial machinery
  • Microbes are not just 'germs' but necessary citizens for the planet's health
  • Understanding the vast scale of the body's internal geography from a microbe's perspective
  • The collaborative nature of the 'self' involving both human and non-human residents
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives The Body as a Planet the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

A World Within Your Mirror

Imagine the microscopic inhabitants of your skin. What is true about these tiny citizens and the microbes living among them?

Get it right to open this lesson and 11 more in the app.

Course map

Where The Body as a Planet takes you

Explore your anatomy as a vast, living ecosystem where cells are citizens, blood is a transit system, and light sets the planetary clock.

  1. 1

    The Living Landscape

    • Citizens of the Flesh
    • Highways and Security
  2. 2

    Cosmic Forces

    • Light, Space, and Time
    • The Alien Invasions

2 sections · 4 units · 12 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Storyteller

The Body as a Planet is taught in the The Storyteller style: every lesson is a story. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Start free

Start The Body as a Planet today.

Download Tomo, search The Body as a Planet, and play your first lesson in under a minute.