TED-Ed releases new lesson explaining how the “morning-after pill” prevents pregnancy
March 2026. A new animated lesson from TED-Ed explores the science behind emergency contraception and answers a common question: how does the morning-after pill actually work?
In “How does the morning-after pill prevent pregnancy?”, physician and researcher Alison Edelman explains the biological mechanisms behind emergency contraceptive pills and addresses widespread misconceptions about their function.
Using engaging animation and accessible explanations, the lesson walks viewers through the reproductive cycle, the timing of ovulation, and why emergency contraception is most effective when taken as soon as possible after unprotected sex.
The video includes interactive learning features such as discussion questions, quizzes, and additional resources. Watch the full lesson here: