"Holding the Certificate of Sustainable Tourism from the Costa Rican Tourism Board, Green World Adventures (about 12 years old) offers eco-themed adventures for luxury travelers, families, adventure-seekers, and nature enthusiasts; their 13-day highlights trip goes literally coast to coast with kayaks, horses, boats, beaches, and volcanoes, and trips range from $762 for a five-day volcano-and-cloud-forest experience up to $6,693 for extreme luxury vacations." - Matthew Kepnes