Nothing ruins a hot July afternoon faster than a warm drink. You reach into your cooler, expecting a freezing cold soda. Instead, you get a lukewarm can and a soggy sandwich. It is a sad moment that happens to many of us during the sunny months. Summer is all about outdoor fun. We love beach trips, backyard barbecues, and park picnics. But keeping your food and drinks safe and cold in the heat is a real challenge. There is a right way to pack a cooler. With a few simple tricks, you can keep your ice frozen for days. Here is how to keep your summer food and drinks icy cold. Always Start with a Cold Cooler Most people store their coolers in a hot garage. When you pull it out, the plastic walls are warm. If you put ice into a warm cooler, the ice melts fast. The plastic actually absorbs the cold from your ice. You need to pre-chill your cooler first. Put it in the coolest room of your house the night before your trip. Fill it with frozen water bottles. This lowers the temperat...