All Courses (1006 courses)

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Ecology and Ecosystems Ecology and Ecosystems logo
Science

Ecology and Ecosystems

A practical introduction to how living systems interact, adapt, and change

20 lessons 1 free preview
$9.95 $99
Climate Science Fundamentals Climate Science Fundamentals logo
Science

Climate Science Fundamentals

A practical foundation in Earth’s climate system, evidence, models, impacts, and solutions with Prof…

18 lessons 1 free preview
$9.95 $99
The Human Brain Explained The Human Brain Explained logo
Science

The Human Brain Explained

A clear, practical guide to brain structure, function, behavior, and everyday neuroscience

19 lessons 1 free preview
$9.95 $99
Evolution: The Evidence and the Mechanisms Evolution: The Evidence and the Mechanisms logo
Science

Evolution: The Evidence and the Mechanisms

A clear, evidence-based course on how evolution works and why it is central to modern biology

20 lessons 1 free preview
$9.95 $99
Quantum Mechanics for Non-Physicists Quantum Mechanics for Non-Physicists logo
Science

Quantum Mechanics for Non-Physicists

A clear, concept-first guide to the strange rules behind modern reality

18 lessons 1 free preview
$9.95 $99
The Solar System Explained The Solar System Explained logo
Science

The Solar System Explained

A clear, practical tour of planets, moons, orbits, space environments, and exploration with Professo…

19 lessons 1 free preview
$9.95 $99
Atheism, Agnosticism, and Humanism Atheism, Agnosticism, and Humanism logo
History, Philosophy & Religion

Atheism, Agnosticism, and Humanism

A clear, comparative introduction to nonreligious thought, secular ethics, and modern humanist life

18 lessons 1 free preview
$9.95 $99
Apologetics: Reasoning About Belief Apologetics: Reasoning About Belief logo
History, Philosophy & Religion

Apologetics: Reasoning About Belief

A clear, respectful approach to defending faith, evaluating objections, and thinking well about beli…

18 lessons 1 free preview
$9.95 $99
Church History: From the First Century to Today Church History: From the First Century to Today logo
History, Philosophy & Religion

Church History: From the First Century to Today

A clear, chronological journey through Christianity’s people, councils, conflicts, reforms, and glob…

18 lessons 1 free preview
$9.95 $99
Bible Study: How to Read Scripture Thoughtfully Bible Study: How to Read Scripture Thoughtfully logo
History, Philosophy & Religion

Bible Study: How to Read Scripture Thoughtfully

A clear, practical course in reading the Bible with context, care, and theological depth

20 lessons 1 free preview
$9.95 $99
Comparative Religion: World Faiths Compared Comparative Religion: World Faiths Compared logo
Arts, Music & Media

Comparative Religion: World Faiths Compared

A structured, respectful study of major religious traditions, shared questions, and meaningful diffe…

18 lessons 1 free preview
$9.95 $99
Introduction to Christianity Introduction to Christianity logo
History, Philosophy & Religion

Introduction to Christianity

A Clear Guide to Christian Belief, History, Scripture, Worship, and Practice

20 lessons 1 free preview
$9.95 $99
Introduction to Judaism Introduction to Judaism logo
History, Philosophy & Religion

Introduction to Judaism

Beliefs, Practices, Texts, History, and Jewish Life

18 lessons 1 free preview
$9.95 $99
Introduction to Islam Introduction to Islam logo
History, Philosophy & Religion

Introduction to Islam

A Clear, Respectful Guide to Islamic Belief, Practice, History, and Contemporary Life

19 lessons 1 free preview
$9.95 $99
Introduction to Hinduism Introduction to Hinduism logo
History, Philosophy & Religion

Introduction to Hinduism

A Clear, Respectful Guide to Hindu Traditions, Texts, Practices, and Worldviews

18 lessons 1 free preview
$9.95 $99
Introduction to Buddhism Introduction to Buddhism logo
History, Philosophy & Religion

Introduction to Buddhism

A clear, practical guide to Buddhist history, ideas, traditions, and everyday practice with Professo…

20 lessons 1 free preview
$9.95 $99
Eastern Philosophy: Confucius, Lao Tzu, and Beyond Eastern Philosophy: Confucius, Lao Tzu, and Beyond logo
History, Philosophy & Religion

Eastern Philosophy: Confucius, Lao Tzu, and Beyond

A practical introduction to classical Chinese, Indian, Buddhist, and Japanese traditions

18 lessons 1 free preview
$9.95 $99
Philosophy of Science Philosophy of Science logo
History, Philosophy & Religion

Philosophy of Science

How Scientific Knowledge Is Built, Tested, Debated, and Revised

19 lessons 1 free preview
$9.95 $99
Philosophy of Mind Philosophy of Mind logo
History, Philosophy & Religion

Philosophy of Mind

Consciousness, Self, Thought, and the Place of Mind in Nature

20 lessons 1 free preview
$9.95 $99
Philosophy of Religion Philosophy of Religion logo
History, Philosophy & Religion

Philosophy of Religion

Arguments, Belief, Doubt, and the Rational Study of Ultimate Questions

20 lessons 1 free preview
$9.95 $99
Existentialism: Meaning in a Meaningless World Existentialism: Meaning in a Meaningless World logo
History, Philosophy & Religion

Existentialism: Meaning in a Meaningless World

A practical introduction to freedom, anxiety, authenticity, absurdity, and the responsibility of mak…

20 lessons 1 free preview
$9.95 $99
Epicureanism: The Pursuit of Tranquil Pleasure Epicureanism: The Pursuit of Tranquil Pleasure logo
History, Philosophy & Religion

Epicureanism: The Pursuit of Tranquil Pleasure

A practical study of Epicurus, desire, friendship, fear, and the art of living calmly

18 lessons 1 free preview
$9.95 $99
Ancient Greek Philosophy: Socrates, Plato, Aristotle Ancient Greek Philosophy: Socrates, Plato, Aristotle logo
History, Philosophy & Religion

Ancient Greek Philosophy: Socrates, Plato, Aristotle

A guided introduction to the questions, arguments, and lasting influence of classical Greek thought

20 lessons 1 free preview
$9.95 $99
Introduction to Philosophy Introduction to Philosophy logo
Arts, Music & Media

Introduction to Philosophy

A guided tour of life’s central questions, from ancient arguments to modern dilemmas

19 lessons 1 free preview
$9.95 $99