- Using science for art, and art for science.
- How much does it cost to go to Hogwarts?
- Stephen Hawking: If we can colonize space within 200 years, humans will survive.
- World map: 7 billion people and their income.
- Creating a market for cigarette butts: at $3 a pound, it’s well worth it.
- Monkeys and fair use: if a monkey takes a photo, who owns the rights?
- What if cars could talk to each other?