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.
Comparing the life expectancy of people diagnosed with HIV in 2005 with that in the general population, it was 21.1 years shorter. Men could expect to die an average of 19.1 years before their HIV-negative peers, but this figure varies by age.