Leafcutter ants in Boca Tapada, Costa Rica (© Bence Mate/Visuals Unlimited/Corbis)

【September 7 2015】Happy Labor Day! But not you, leafcutter ants. No holiday for you! In the well-organized, caste-based system of Atta cephalotes, a species of ant native to Central and South America, every day is busy and a day off just isn’t in their DNA. These worker ants bring plant matter back to the colony, where it's used to grow a fungus that they eat. If that sounds complicated, remember that we work to earn paper money that we exchange for food…Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..