Now more than ever books connect us and foster an essential curiosity about our world. So we are pleased to offer free global shipping on all website orders placed through June 30th. Please use the code FREEF or the relevant discount code at checkout. If you are making use of a promotion code for the Earth Day reading list or an academic conference, please use that code at checkout and free shipping will automatically be applied. Customers are responsible for local customs and import charges. Stay safe, stay curious, and #ReadUP.