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Why Is It So Hard to Get Rid of Bed Bugs?
A TED-Ed lesson on bed bugs — the flat, blood-feeding insects that have pestered humans for millennia. Learn how they find you, why their bites often go unnoticed at first, and why they're so tough to defeat.
How it works
- Press play to start the video.
- Videos 5 minutes or longer pause once or twice for a quick check. Get it right and you're on your way. If not, you'll see a friendly explanation and the video simply keeps going. Short videos skip the checks.
- At the end there's a 3-question test. Score 60% or more to complete the lesson, and 80% or more to master it. You can always watch again and try for a higher score.