This chart is atrocious:

• Big countries not labeled (China, US)
• GDP per capita, so why not deaths per capita per year?
• No correction for demographics (age)
• The linear regression is incorrect. It is impossible for a continent to have negative deaths). There are no standard error lines around the curve (like so)
• The chart is too verbose to tell a good story. Remove half of the information, and it improves.
• It should be the "reported death rate", because we don't know the true death rate.
• Is this deaths per year? (probably, but implied).

An informational chart would plot:

• GDP per capita (which is a terrible metric, but hey... you probably read the wikipedia page before publishing a graph, so you know what you're doing)
• vs. Deaths per capita due to outdoor pollution in a specific age-group (60-70 or sth). This is an unreliable metric, because different countries account for deaths differently. If someone smoked in a polluted area and dies of lung cancer, what would you attribute the death to?
• Remove the linear regression lines.
• Remove the bottom 20 percentile of smaller countries.
• Label only the top 20 percentile of countries or don't label at all.
• Remove the average lines.
• Perhaps also remove the size <> population of the scatter plot.
• Make 5 panels for each continent with a shared GDP axis (like so) if you want to disentangle the information.

But, most importantly, what should be the title of the story you want to tell with this chart?