Target Corp. says it will celebrate Earth Day by handing out 1.5 million free reusable bags on April 21, as it has in past years, and is loading 250,000 of them with free samples from such leading sustainability brands as Method Dish Soap, Annie’s Bunny Grahams, Seventh Generation Laundry Detergent and Burt’s Bees Moisturizing Cream. Additionally, the Minneapolis-based chain says it plans to distribute sustainable product coupon books, offering up to $40 in savings.