FREAK-est Links

• It’s official: coffee helps women with depression.
• Why economic history is important for economists.
• Twitter captures world mood: a time series of how we are feeling.
• Cities take up 2% of the earth’s crust, 50% of the world’s population, and consume 75% of the world’s energy – says MIT prof.
• How geo-thermal power plants can produce lithium for electric car batteries.
• Charting the gloom: a comparison of consumer confidence over the last 3 years.
• How to source pot? A marijuana DNA database.
• Yale and Harvard endowments post killer returns.