Hacker News on 30 April 2009

• Ask HN: Do you have any code or projects of your own you would like to talk about instead?
• There Is No Such Thing as Nuclear Waste
• An Introduction to Mindfulness Meditation
• Lessons from a failed startup
• Screenshots of Twitter's internal admin interface
• How Facebook stores its billions of photos
• In Major Shift, Apple Builds Its Own Team to Design Chips
• YC Terms are Poor
• Collection: Design Patterns
• Clojure: It’s About the Libraries