Some of the worst affected countries may choose to treat all infants and children born to mothers confirmed or suspected of living with HIV, until HIV infection is excluded.
There are those who consider it questionable that these defense-linked research projects will either improve our standard of living or do much to protect our diminishing resources.
The objectors perhaps may doubt whether human beings, if taught to consider happiness as the end of life, would be satisfied with such a moderate share of it.
The re is no shortage of sceptics, both about the sincerity of Pepsi's social mission and, more recently, its performance, which was decidedly flat in 2009.
While many were doubtful that the real Zuckerberg would join a competing social service, tech blogger Robert Scoble texted Zuckerberg himself to confirm, tweeting out "Name drop moment."