A quick way to find out more about your topic is to do an internet search but remember to think critically about which websites you use. For example, the Rio2016 website is probably more reliable than Wikipedia. Wikipedia has great coverage of many topics, including the topic below, but you need to be aware that this information is contributed to by lots of different people. If you are using this site, it always pays to check the information against that on other sites or in books from the library.
Click on the Explora icon above to search for the Olympic Games. Choose THIS if you are looking for 'issues' or 'problems' Rio has had to deal with.
Search NZ Olympic site for some great information in the Olympic Games from the beginning until now.
To discover information on the homework site ManyAnswers use the search term drugs in sport in the search box.