Are these the seven most sustainable cities? – in pictures https://www.theguardian.com/sustainable-business/gallery/2016/mar/20/hamburg-coffee-pod-ban-bogota-buses-sustainable-cities-in-pictures
New York Public Library Public Domain Collections: Free to Share & Reuse https://www.nypl.org/research/collections/digital-collections/public-domain
The list of slave-labor imports you use might surprise you http://www.thenewstribune.com/news/nation-world/world/article63808092.html#storylink=cpy
How can Lidl sell jeans for £5.99? https://www.theguardian.com/business/2016/mar/13/lidl-jeans-bangladesh-worker-pay-23p-an-hour
Learning from smallpox: How to eradicate a disease http://ed.ted.com/lessons/learning-from-smallpox-how-to-eradicate-a-disease-julie-garon-and-walter-a-orenstein
Learning Outside the Classroom: Manifesto http://www.thegrowingschoolsgarden.org.uk/downloads/lotc-manifesto.pdf
