Here's another talk from the website ted.com. I'm sure you'll find it interesting, especially if you're a doctor, nurse or other medical professional.
Here are three easy questions about the talk:
1. Why does the speaker tell the story about Veronica?
2. What does the "parable of three friends" demonstrate?
3. In the field of health care, what is an "upstreamist"?
If you have more time, you could note down some of the good words and phrases that the speaker uses.