1) retractionwatch.wordpress.com - a very nice blog about misconduct, fraud, cheating, and other things we all love
2) A Harvard entrance exam from 1899
3) The world is producing more PhDs than ever before. Is it time to stop? (Nature)
4) Reform the PhD system or close it down (Nature)
5) "Down with Determinants!" by Sheldon Axler. The paper presents a different approach to linear algebra, the one without determinants.