Carbon dioxide levels at highest, mandatory respiratory masks for all only 20 years away.

This article says that carbon dioxide levels in air have reached the highest point. If the trend continues, everyone may have to wear respiratory masks to breathe in just 20 years from now.

Article Highlights

• Highest amount of carbon dioxide in atmosphere for May was reported.
• Amount of carbon dioxide in the air was  411.25 parts per million
• Scientists suggest this could be highest concentration of CO2 in human history. 

The climatologists say that if the current rate of rise in carbon dioxide levels continue, it would reach at 450 ppm in just 20 years from now. The companies manufacturing air-filters and protective gas masks would be the sole beneficiaries.