What inventions does Iceland get credit for?

* The compass: The first written evidence of the compass dates back to the 12th century, when it was described in a Chinese text. However, some historians believe that the compass may have been invented in Iceland even earlier.

* The sundial: The sundial is a device that tells time using the position of the sun. The first sundials were invented in ancient Greece, but the Icelanders made significant improvements to the design.

* The water mill: The water mill is a device that uses the power of flowing water to grind grain or other materials. The first water mills were invented in the Middle East, but the Icelanders were among the first to use them in Europe.

* The greenhouse: The greenhouse is a structure that is used to grow plants in a controlled environment. The first greenhouses were invented in ancient Rome, but the Icelanders were among the first to use them in northern Europe.

* The zipper: The zipper is a device that is used to fasten clothing or other objects. The first zippers were invented in the 19th century, but the Icelanders were among the first to use them in everyday life.