25. Serbia
> Annual sleep loss due to climate change:12.8 hrs per person
> Average annual temperature: 52.3 degrees Fahrenheit
> GDP per capita: $18,255
> Population: 6,899,126
24. Cyprus
> Annual sleep loss due to climate change:13.4 hrs per person
> Average annual temperature: 67.3 degrees Fahrenheit
> GDP per capita: $39,008
> Population: 1,207,361
23. Greece
> Annual sleep loss due to climate change:13.5 hrs per person
> Average annual temperature: 57.6 degrees Fahrenheit
> GDP per capita: $27,073
> Population: 10,700,556
22. Singapore
> Annual sleep loss due to climate change:14.8 hrs per person
> Average annual temperature: 81.7 degrees Fahrenheit
> GDP per capita: $94,506
> Population: 5,685,807
21. South Africa
> Annual sleep loss due to climate change:14.9 hrs per person
> Average annual temperature: 64.9 degrees Fahrenheit
> GDP per capita: $12,666
> Population: 59,308,690