Assessing global and corporate use of child labor

Difficulty level: INTERMEDIATE

Image credit: Maurizio Costanzo, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons

Addressing correlations between global warming and public health

Difficulty level: ADVANCED

Image credit: © 2013 Robert S. Donovan, CC BY 3.0

Alleviating tensions between the DPRK and the global community

Difficulty level: NOVICE

Image credit: Uri Tours via Flickr, CC BY-SA 2.0