Now, the work begins for Optoro, a start-up company that aims to reduce the financial and environmental costs of another great holiday tradition: returns. Americans returned $260 billion in merchandise last year, up more than 66 percent from five years ago, according to the National Retail Federation. And a quarter of that was during the holiday season. As e-commerce sales surge and free return shipping becomes the norm, shoppers are set to return even more this year — a cycle that started in earnest on Monday, the first weekday after Christmas. Read more at The New York Times.