Can you tell the difference between a genuine stock price curve and a random walk? Find out with this online test, created by two doctoral students in Switzerland. For what it's worth, I sucked at it -- so much for any future career in technical analysis... (Via Marginal Revolution.)

"Top 10 System Administrator Truths". And the companion "Top 8 End-User Troubleshooting Tips". (Via BBspot.)

Zero-G and microgravity space sports.

"The Science of Sea Monsters"