No, not all the islands in the world have been discovered. New islands are still being found, especially in remote or unexplored areas.
About 3 percent from what i know
It is impossible to determine if ALL the rules of nature have been discovered.
Since not all diamonds have been discovered, it is not possible to give you the answer you want.
No, there are still some out there. They just haven't been discovered.
Yes but satellites send pictures of all of the earth so they might not of been explored but they have been discovered
Almost certainly there are temples that have not yet been discovered.
Christopher Columbus
James Cook discovered the Hawaiian Islands, which he originally called the Sandwich Islands. Although the Cook Islands are named after him, Cook did not discover them, merely visiting them in 1773.
Christopher Columbus
Many airports all over the world are located on islands.
All the fish that have been discovered.
Yes they did. Remains of viking settlements can be found in all of Scandinavia and other parts of the North (such as Iceland, the Faroe Islands and Western Finland). Remains have also been discovered in Greenland and Canada.