Greenhouse gases can be removed from the atmosphere by various processes, as a consequence of: 1  a physical change (condensation and precipitation remove water vapor from the atmosphere). 2  a chemical reaction within the atmosphere. 3  a physical exchange between the atmosphere and the other compartments of the planet.
What we can say is that the vast majority of people infected with HIV will develop AIDS sometime during their life (an average of 10 years or more after infection), and with early intervention and treatment, they could potentially live with AIDS for many years more.
Some gay men with HIV can now expect to live as long as the average American, though non-white patients still lag far behind. A 20-year-old man with HIV who begins antiretroviral therapy today had better start saving for his golden years. Although HIV infection was once considered a certain death sentence, research published today shows that the average person infected with HIV in North America can expect to live to the age of 63. Gay men with HIV can expect to live even longer, to an average age of 77, according to the findings published in PLOS One. In 2009, the average life expectancy for a 20-year-old American man in the general population was exactly the sameâ77, the study reported.