The document summarizes several of the top global issues according to world geography:
1) Climate change and global warming are causing rising global temperatures due to increases in greenhouse gases like carbon dioxide from both natural events and human activities.
2) Communicable diseases like HIV/AIDS, malaria and tuberculosis infect over one billion people due lack of access to healthcare and effective treatments.
3) Conflicts in places like Sudan, Iraq and Ethiopia have resulted in millions of deaths over thousands of years and continue to displace populations.