The author of the primary article about each challenge is also listed
The experts started with ten challenges and several "opportunities" within each:
The experts ended up rating seventeen of the opportunities within seven of the ten challenges. Projects were rated in 4 groups: Very Good, Good, Fair and Bad
They assigned the highest priority to implementing certain new measures to prevent the spread of HIV and AIDS. They estimated that an investment of $27 billion could avert nearly 30 million new incidents of infection by 2010.
Policies to reduce malnutrition and hunger were chosen as the second priority. Increasing the availability of micronutrients, particularly reducing iron deficiency anemia through dietary supplements, has an exceptionally high ratio of benefits to costs, which were estimated to be $12 billion.
Third on the list was trade liberalization; unlike the top two priorities, lives are not at risk, but the experts agreed that this challenge's modest costs yielded large benefits both for the world as a whole and for developing nations.
The fourth priority is to control and treat malaria; $13 billion produces very good benefits for the cost, particularly if applied toward chemically-treated mosquito netting for beds. 
The fifth priority is increased spending on research into new agricultural technologies appropriate for developing nations. Three proposals for improving sanitation and water quality for a billion of the world’s poorest followed in priority (ranked 6 to 8: small-scale water technology for livelihoods, community-managed water supply and sanitation, and research on water productivity in food production). Closing this group was the project concerned with government - lowering the cost of starting new business.
Number 10 was migration project on lowering barriers to migration for skilled workers. Eleven and twelefe were malnutrition projects - improving infant and child nutrition and reducing the prevalence of low birth weight. Number 12 was the scaled-up basic health services project for fighting the diseases.
Numbers 14-17 contained migrations project (guest-worker programmes for the unskilled), which was deemed to discourage integration, and climate change projects (optimal carbon tax, the Kyoto protocol and value-at-risk carbon tax), which the panel judget to be least cost-efficient of the judged proposals.
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