Hacker News on 4 August 2010

• Google Kills Wave
• Valedictorian Speaks Out Against Schooling in Graduation Speech
• Depression-era color photos
• California's Prop 8 (gay marriage ban) ruled unconstitutional
• 40 billionaires pledge to donate half their wealth
• Peter Norvig on Being Wrong
• Feds admit storing checkpoint body scan images
• Save Google Wave
• Choosing New York over San Francisco
• Happy Git Commits