Delian problem

The problem owes its name to a story concerning the citizens of Delos, who consulted the oracle at Delphi in order to learn how to defeat a plague sent by Apollo. According to Plutarch it was the citizens of Delos who consulted the oracle at Delphi, seeking a solution for their internal political problems at the time, which had intensified relationships among the citizens. The oracle responded that they must double the size of the altar to Apollo, which was a regular cube. The answer seemed strange to the Delians and they consulted Plato, who was able to interpret the oracle as the mathematical problem of doubling the volume of a given cube, thus explaining the oracle as the advice of Apollo for the citizens of Delos to occupy themselves with the study of geometry and mathematics in order to calm down their passions.

Doubling the cube, also known as the Delian problem, is an ancient  geometric problem. Given the edge of a cube, the problem requires the construction of the edge of a second cube whose volume is double that of the first, using only the tools of a compass and straightedge. 

Quick tour Olympia

In western Peloponnese, in the beautiful valley of the Alpheios river, lies the most celebrated sanctuary of ancient Greece. Dedicated to Zeus, the father of the gods, it sprawls over the southwest foot of Mount Kronios, at the confluence of the Alpheios and the Kladeos rivers, in a lush, green landscape. Although secluded near the west coast of the Peloponnese, Olympia became the most important religious and athletic centre in Greece. Its fame rests upon the Olympic Games, the greatest national festival and a highly prestigious one world-wide, which was held every four years to honour Zeus. The origin of the cult and of the festival went back many centuries. Local myths concerning the famous Pelops, the first ruler of the region, and the river Alpheios, betray the close ties between the sanctuary and both the East and West. 

Hellenic Olympic Committee Olympia video

Pankration

Pankration  (Greek: παγκράτιον) was a sporting event introduced into the Greek Olympic Games in 648 BC and was an empty-hand submission sport with scarcely any rules. The athletes used boxing and wrestling techniques, but also others, such as kicking and holds, locks and chokes on the ground. The only things not acceptable were biting and gouging out the opponent's eyes. The term comes from the Greek παγκράτιον [paŋkrátion], literally meaning "all of power" from πᾶν (pan-) "all" and κράτος (kratos) "strength, might, power".

Ships in Age of bronze

The Aegean has since prehistoric times been a sea that has united rather than separated the large or small islands. Between these islands, there were narrow sea passages and shallow gulfs, accessible by some primitive sailing means. Navigation in the Aegean, has been testified by the tools made of Melian obsidian which were found in Franchthi Cave in Hermionid (at the eastern coast of the Peloponnese, a distance of 80 nautical miles (approximately 150 kilometers) from Melos. Tools made of Melian obsidian also found on Crete (Knossos) and on Cyprus, substantiate the existence of sea routes in the Aegean from the Early till the Final Neolithic (6800-3200 BC). They made a boat exclusively from papyrus, an aquatic plant which can be found near water areas of Greece ( as well as on the river Nile in Egypt). A similar boat was used until recently in Kerkyra. The "papyrela" could easily travel from Lavrion to Milos. Its crew would use kayak oars for navigation. It has also been proven that men in the Greek prehistoric period could travel by sea using natural material offered by the domestic world of Greece and also using simple techniques such as the one of straw mats.

Greek ships in age of bronze