Two explorers on a glacier in Alaska woke up one day and found that their packs had blown away or been covered with snow. They couldn't find them no matter how hard they tried. They had a long way to get back to civilization and the most important item that they lost were there sunglasses. The day was sunny, if fact the weather forecast was for very long sunny days.

Without sunglasses they knew that they would not be able to get home and might even go blind.

Travelling at night was out because their flashlight were gone too. All they had left was what was in their tent-- a knife, a sleeping bag, a box of macaroni and cheese, and some duct tape.

What should they do to keep their eyes from being fried.