You can enter the Explorer Academy Sweepstakes from National Geographicfor your chance to win a once-in-a-lifetime adventure when you cruise Alaska’s Inside Passage. The trip includes a thrilling 8-day voyage to experience the remarkable beauty of Alaska. You’ll visit Glacier Bay National Park, learn about Alaska’s rich Native American heritage, and pass islands teeming with wildlife. The ARV of the prize is $37,500. Entry ends May 31, 2019.