If you mean a newspaper from Oslo, Norway Aftenposten and Dagsavisen is two major newspapers with special focus on Oslo. But all the national media is situated in Oslo (expect TV2)
It is unknown, but some argue that it is put together from two old norwegian words; OS - river delta and LO - possibly an old name for one of the rivers running thru Oslo. This is however much debated
There aren't that many things to do in Oslo, but there are some: The Nobel Prizs Peace Center: Norway is the country that gives out the Nobel Peace Prize, and the center is located central in Oslo...