the intellectual exercise of figuring out the world
Even though we can't do much about politics, world peace, etc., I have
a somewhat morbid curiousity that encourages me to try to figure out
how the world really works.
A really good start is to google for "dollar euro oil" and skim
through the first several links.
This exercise can take as little as 10 or 15 minutes if you read quickly!
Here are the first few google links, BTW:
Note on google ranking: these are the first 4 links because these web
pages have the most web links pointing to them. Google web ranking
based on number of incoming links is a good but not perfect indicator
of the world's interest in a web page.