Hacker News on 27 May 2008

• Cities and Ambition
• Cost of converting entire U.S. to electric cars? Zero.
• AJAX Libraries API: Speed up your Ajax apps with Google’s infrastructure
• The creator of Ruby explains why Ruby sucks
• Google App Engine opens up for Google I/O, pricing announced
• Reddit redesigned
• Freeman Dyson: The Question of Global Warming
• TipJoy’s New API Lets Web Apps Share the Love (and Cash) With Their Contributors
• Steve Yegge: Singleton Considered Stupid
• Ask HN: How hard is your problem?