With more people buying stuff used, companies have to rethink everything from a product's durability to the terms of their warranties. Staff reporter Max Chafkin explains where the opportunities lie.
Here Are America's Top 10 Fastest-Growing Companies of 2015
5 Things You Should Know About Student Loan Refinancing
12 Scientifically Proven Habits That Will Change Your Life
Your Desk Says What Kind of Genius You Are
How to Be on Vacation Every Day for the Rest of Your Life (Really)