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Choose a topic and level, then practice at your own pace.
Unit 52 lessons
Circadian Misalignment and Shift Work
A sleep medicine lecturer argues that circadian misalignment in shift workers is a preventable occupational hazard driven by light and meal timing.
Sleep Spindles and Memory Consolidation
A lecture on how brief bursts of sleeping brain activity called spindles transfer fragile memories into durable long term storage.
Unit 102 lessons
Wealth Gap Seminar Discussion
Students debate Piketty, wealth taxes and feasibility while preparing a seminar presentation on inequality.
Measuring Inequality Lecture
A lecture on how economists measure inequality, from the Gini coefficient to the pitfalls of wealth data.
Unit 141 lessons
Unit 152 lessons
Dark Matter and Galaxy Rotation Curves
A lecturer explains how galaxy rotation curves revealed the presence of unseen dark matter.
Designing an Epigenetics Study
A supervisor and her postgraduate students debate the design and pitfalls of an epigenetic inheritance study.
Unit 202 lessons
Language Death and the Fight to Revive
A lecture examining why languages fall silent and how revitalization programmes in New Zealand and Hawaii succeeded.
The Quiet Invention of the Alphabet
A lecture arguing that the alphabet succeeded not because it was superior but because it was cheap and learnable.