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I would suggest looking into Time magazine, Financial times, BBC news, The Economist.

I found great articles in the Financial times on supply and demand. Try looking up gas prices as they have been in the news lately. If you need anything for your international economics, do a tariffs commentary as it is very easy to get full marks on it because you can explain the graphs really well and easily and the analysis is not hard to do.

My Economics teacher told me to always include diagrams, explain the diagrams and ALWAYS have examples. The IB love examples.

Good luck! :D