Outdoor retail giant REI Co-op has announced a revamped version of its store credit card for co-op members. The REI Co-op Mastercard, issued by Capital One, earns 5% back on REI purchases and donations made to the REI Cooperative Action Fund, plus 1.5% back on everything else. You redeem rewards toward REI purchases, including trips... Caitlin Mims writes for NerdWallet.