From green mountains and white-sand beaches to expansive coffee fields and active volcanoes, Costa Rica awaits. You name it, our intrepid student researchers have found it--and they've made sure you can afford it. Watch Tico farmers grow coffee in Heredia, ride waves with expert surfers in Playa Tamarindo, and save turtles along the Caribbean coast before kicking back with a cold guaro after a day well spent. Pack your bags, hunt down an old surfboard,...