Hacker News
- Why hasn't commercial air travel gotten any faster since the 1960s? (2009) https://engineering.mit.edu/engage/ask-an-engineer/why-hasnt-commercial-air-travel-gotten-any-faster-since-the-1960s/ 667 comments
- Why does traffic bottleneck on freeways for no apparent reason? (2009) https://engineering.mit.edu/engage/ask-an-engineer/why-does-traffic-bottleneck-on-freeways-for-no-apparent-reason/ 26 comments
- What's the difference between a motor and an engine? (2013) https://engineering.mit.edu/engage/ask-an-engineer/whats-the-difference-between-a-motor-and-an-engine/ 138 comments
- A lightning bolt would be worth only about a nickel (2015) https://engineering.mit.edu/engage/ask-an-engineer/is-there-a-way-to-harness-electricity-from-lightning/ 120 comments