To view the free e-book The Age of Sustainable Development you must go through CUPOLA, which requires an internet connection. CUPOLA is an online reading platform provided by the Columbia University Press. To view the book on your computer, please click on the link below.
http://cupola.columbia.edu/age-of-sustainable-development-student-offer/
Once you click on the link above, you can use the following access code to get the book for free: sachs-student
You will need to create an account with CUPOLA to complete the "purchase". Once you've completed the purchase, you can then click on any chapter and go through the full book.
If you would prefer to purchase and download the e-book, click here. Please visit Professor Sachs' website for a full list of retailers.