Education · Science · Society & Culture
by CrashCourse
At Crash Course, we believe that high-quality educational videos should be available to everyone for free! Subscribe for weekly videos from our current courses! The Crash Course team has produced more than 60 courses on a wide variety of subjects, ranging from the humanities to sciences and so much more! We also recently teamed up with Arizona State University to bring you more courses on the Study Hall channel.Links:Support us on Patreon!: http://patreon.com/crashcourseInstagram: https://www.instagram.com/crashcourseBluesky: https://bsky.app/profile/thecrashcourse.bsky.socialTikTok:…
Crash Course Sex Ed Episode 4 tackles gender identity in a 15-minute educational format. The episode is structured around six main segments: an introduction to being transgender, sexual development basics, gender identity concepts, gender norms and their social construction, transition and trans healthcare, and…
Worth it if you're seeking an accessible, evidence-based introduction to gender identity and transition for yourself or to share with teens.
John Green's Crash Course episode covers the post-World War II decolonization movement that dismantled most European empires across Asia, Africa, and the Middle East. The episode frames decolonization as a consequence of centuries of European imperial expansion, then examines how these empires collapsed after WWII—a…
Worth it if you want a quick, accessible primer on post-WWII decolonization movements or need foundational knowledge before diving into specific regional histories.
Crash Course Sex Ed's fifth episode tackles sexual orientation comprehensively in 13 minutes. The episode opens with a relatable hook about first crushes, then defines sexual orientation as the pattern of emotional, romantic, and sexual attraction to people. The hosts trace the history of homosexuality from ancient…
Worth it if you want a quick, accurate, and inclusive introduction to sexual orientation suitable for teens, educators, or anyone seeking a refresher grounded in reputable sources.
CrashCourse Biology #39 explores the kingdom Fungi and their critical ecological role, framed around the central theme that fungi thrive on death and make all life possible. The episode is structured around seven main sections: an opening biography segment, fungal structure, and then four functional categories of…
Worth it if you're a biology student, educator, or curious learner wanting a quick, structured overview of fungal ecology and their role in decomposition and nutrient cycling.
This Crash Course Anatomy and Physiology episode focuses on the sympathetic nervous system, specifically how it functions during stress responses. Host Hank Green walks through the physiological mechanisms that activate when the body perceives a threat or stressor. The episode is structured around understanding signal…
Worth it if you're studying anatomy and physiology, need to understand the sympathetic nervous system's stress response mechanisms, or want supplementary learning material with built-in review tools.
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Crash Course Sex Ed Episode 6 tackles the question "Is virginity real?" in a 13-minute educational segment. The episode is structured around five main sections: it opens with cultural references to virginity ("Like a Virgin"), then traces the historical construction of virginity as a concept, examines the biological…
Worth it if you're a teen or young adult seeking accurate, myth-busting sex education that contextualizes virginity as a social construct rather than a biological absolute.
This CrashCourse Biology episode explores vascular plant reproduction, building on the alternation of generations strategy that evolved in nonvascular plants 470 million years ago. Host Hank Green explains how ferns, gymnosperms, and angiosperms have adapted and refined this reproductive system over evolutionary time.…
Worth it if you're a high school or college biology student learning plant reproduction, or anyone curious about how flowering plants evolved their reproductive strategies.
This is a 4-minute preview episode introducing Crash Course's new 24-episode series on Native American history, hosted by Che Jim. The preview outlines the scope and ambitions of the full course rather than delivering substantive historical content itself. According to the show notes, the series will cover Native…
Worth it if you're interested in the full Native American History series and want to understand its scope, structure, and educational goals before committing to 24 episodes.
Crash Course Sex Ed episode 8 delivers a comprehensive overview of contraceptive methods and their history in just 17 minutes. The episode is structured as a guided tour through the contraception landscape, beginning with basic reproductive biology (egg + sperm) before systematically covering natural methods, barrier…
Worth it if you're seeking a quick, factual, judgment-free introduction to contraceptive options and their history, or if you're a teen/young adult starting to explore birth control choices.
This Crash Course Geography episode covers natural hazards—physical processes like heat waves, cyclones, earthquakes, volcanic eruptions, floods, and droughts—and distinguishes them from natural disasters, which occur when these events cause significant harm to humans. The episode promises to explore how geographers…
Worth it if you're a geography student needing a quick overview of natural hazards and their human impact, or a Crash Course viewer already familiar with the series' teaching style.
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Hank Green introduces vascular plants as one of nature's most successful and diverse organism families, framing the episode around their defining feature: conductive tissues that transport water and nutrients throughout the plant body. This evolutionary breakthrough enabled vascular plants to grow much larger, store…
Worth it if you're studying plant biology, need a quick overview of vascular plant anatomy, or want to understand why plants dominate Earth's ecosystems.
This Crash Course Geography episode examines the intersection of agribusiness, GMOs, and agricultural development through the lens of India's agrarian crisis. The episode opens with a striking fact: over 250 million people participated in a trade union strike in India on November 26, 2020, prompted by farming-related…
Worth it if you want to understand how agricultural technology, corporate consolidation, and international trade policy converge to shape farming communities in developing nations, or if you're interested in the India farm crisis and its causes.
This is the opening episode of Crash Course's Native American History series, a 17-minute introduction that sets the stage for a comprehensive retelling of Native American history from pre-1492 to the present and future. The episode begins with a Winter Count—a traditional Native American historical record—to frame…
Worth it if you're starting the Crash Course Native American History series or want a clear, accessible primer on why Native American history matters and how to think about it critically.
This Crash Course World History episode covers China's revolutionary upheaval during the 20th century, spanning roughly a century of political transformation. John Green traces the collapse of the 3,000-year-old dynastic system in 1911–1912, when Chinese nationalists ended Qing rule and established a republic. The…
Worth it if you want a fast, accessible primer on 20th-century Chinese history or need context for understanding modern China's political origins.
This Crash Course Sex Ed episode covers pregnancy and childbirth from conception through postpartum recovery. The episode is structured in clear segments: an introduction framing pregnancy as a positive outcome (contrasting with typical sex ed's focus on prevention), followed by sections on getting pregnant,…
Worth it if you're seeking a science-based, accessible overview of pregnancy and childbirth for sex education, health class, or personal understanding, or if you want to fill gaps left by prevention-focused sex ed.
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Hank Green introduces nonvascular plants—liverworts, hornworts, and mosses—and their unusual reproductive strategies. The episode establishes key traits that distinguish these plants (lack of vascular tissue, dependence on water for reproduction, small size) before surveying the three bryophyte phyla. The core concept…
Worth it if you're a high school biology student tackling plant reproduction, an educator seeking a concise explainer on bryophytes, or anyone curious about why mosses have such strange life cycles.
This 16-minute episode from Crash Course's Native American History series explores tribal sovereignty—a foundational concept for understanding Indigenous governance in the United States. The episode opens with an introduction featuring the Chinook nation, then systematically breaks down what tribal sovereignty means…
Worth it if you're seeking an accessible introduction to tribal sovereignty and Native American governance structures, or teaching high school or introductory college history.
John Green's Crash Course episode on World War I covers the conflict's origins, major characteristics, and lasting cultural impact in 16 minutes. The episode traces how the assassination of Archduke Franz Ferdinand triggered a cascade of alliances that pulled multiple nations into the war. Green explains the shift…
Worth it if you want a quick, engaging overview of WWI's causes and significance, or if you're new to the topic and want context before diving into deeper resources.
This is the first episode of Crash Course's Anatomy and Physiology series, hosted by Hank Green. The episode serves as a foundational introduction to the field, covering essential concepts and terminology that students need before diving into specific body systems. The episode begins with a brief history of anatomy as…
Worth it if you're starting to study anatomy and physiology in high school or college, or need a quick refresher on foundational concepts and directional terminology.
This 12-minute Crash Course Sex Ed episode tackles abortion as an educational topic, structured around five main questions: what abortion is, whether it's safe, who gets abortions, why people seek them, and what people think about the topic. The episode promises to present abortion as 'complicated' and aims to cover…
Worth it if you want a factual, accessible introduction to abortion from a health education perspective, or if you're seeking a resource for teens that treats the topic seriously without advocacy.
CrashCourse Biology #35 covers three major groups of microscopic organisms that represent some of Earth's oldest and most abundant life forms: Archaea, Bacteria, and Protists. Host Hank Green structures the 17-minute episode around these three taxonomic domains/kingdoms, diving into their characteristics and…
Worth it if you're taking high school or introductory college biology and need a quick, organized overview of microbial life domains and kingdoms.
This Crash Course Outbreak Science episode explores the epidemiological transition theory—the framework explaining why infectious disease outbreaks have dramatically declined in developed societies over the past century. The episode examines how and why this progress happened so quickly, moving beyond the assumption…
Worth it if you want to understand the scientific foundations of why infectious disease has declined in developed nations, or if you're interested in public health history and epidemiological theory.
Crash Course Sex Ed's episode on consent tackles a topic that seems straightforward but contains significant nuance. The episode is structured around several key concepts: the evolution from "no means no" frameworks to modern affirmative consent models, the role of context and sexual scripts in communication, the…
Worth it if you're seeking a concise, accessible introduction to modern consent frameworks suitable for teens, young adults, or educators looking for a starting point on the topic.
John Green's Crash Course episode on 19th-century European imperialism covers the expansion of colonial empires across Asia and Africa, with particular focus on British dominance. The episode opens with the Opium Wars—two conflicts fought by Britain to maintain its right to sell opium to China—and the resulting Treaty…
Worth it if you want a quick, engaging primer on European imperialism that emphasizes technology, exploitation, and resistance without requiring prior historical knowledge.
