Since Green doesn't cite any actual studies demonstrating that condom use is ineffective against AIDS, there's not much to rebut.

He's written whole book on the subjects
“AIDS and Ideology”
"Rethinking AIDS Prevention: Learning from Successes in Developing Countries"

You make it sound like he's just making the stuff up. He's also quoted as saying:

“There is a consistent association shown by our best studies, including the U.S.-funded ‘Demographic Health Surveys,’ between greater availability and use of condoms and higher (not lower) HIV-infection rates. This may be due in part to a phenomenon known as risk compensation, meaning that when one uses a risk-reduction ‘technology’ such as condoms, one often loses the benefit (reduction in risk) by ‘compensating’ or taking greater chances than one would take without the risk-reduction technology.”
(related cite: http://www.measuredhs.com/)

What needs to happend is that we need to treat people as people. Reason with them and show them there is a better way to live, respectful of themselves and others.
Right now in these african countries men's way of thinking is, "I can do what ever I want to women because they're an object for my lust...even my wife is an object to my lust"

The CDC agrees : http://www.lifenews.com/nat328.html
(related cite: http://www.cdc.gov)

It’s a common-sense message whether you’re in Africa or dealing with hormonal American teenagers. It’s a hard message to hear over the same-old silly debates, parodies, and dismissals. But if the mind set of African men does not change, throwing condoms is not going to solve the problem...it's like using bandaids to try and fix open heart surgery

--George Carlin

Speaking of Catholicism

"I think a celibate Italian weirdo knows a lit-tle more about sex than you do!"

(Ned Flanders, in character as Sir Thomas More, to Homer Simpson as Henry VIII)

(Of course, now it's a celibate German weirdo. Same difference.)

Those articles are no more convincing than the Pope coming out with the message that no one should have sex. Let me see the actual data; let me see the evidence.

A crude search on google scholar for "condom effectiveness" will get you loads of current scientific research backing up the claim. Search for "condom ineffectiveness" and you get few articles (let alone current articles) with research showing the ineffectiveness of condoms.

This doesn't prove the Harvard researcher wrong, but it does demonstrate that the science is out there, and the data are plentiful. The Pope and others have hundreds of studies to investigate and ample data to analyze if they want to show us some scientific evidence to back up their claim.

When the Pope puts together controlled scientific studies to back up his claim, then maybe his remarks will be worth considering. Until then, to encourage safe sex practices spring for some education (for example, why aids spreads and how to prevent it) and offer behavioral skills training (an aspect of that would be condom use: "here's a condom, this is how to use it").

We'd be horrified if doctors prescribed medication with no data/evidence to support its efficacy. We'd be outraged if psychologists made up or used ineffective therapies to treat mentally ill individuals. Thus, we should be equally disgusted by the Pope's prescription of (ineffective) abstinence-only teaching.

Ingrid, getting advice on human sexuality from a priest is like consulting a stone age tribesman in the rain forest on automobile maintenance.