Morning roundup

A closing of the browser tabs:

• The Economist's write-up of Barcelona's new Museum of Prohibited Art. The museum's website is here. 
• Europe considering pricing agricultural emissions.
• Bill Gates on some of the climate tech in the pipeline.
• Cass Sunstein on goods that people buy but wish did not exist. Fun as a logical exercise - this class of goods could exist in this way. But banning them would just push status-seeking onto other margins. Other margins can be worse. And what if there's an additional class of goods: ones that people loudly claim they wish didn't exist, but secretly enjoy? In that case, could you ever tell which ought to be banned?
• Stephen Jennings's Conversation with Tyler. Great stuff on building new cities in Africa, and a gloomy bit about New Zealand. 
• What happens when central government tries to centrally plan daycare. Maybe Stephen Jennings is right to be pessimistic about the place.