: Don't just identify "big" problems; identify which problems have cost-effective solutions .
How these rankings have in later Copenhagen Consensus updates (like the $75 billion guide) How to Spend $50 Billion to Make the World a Better Place How to Spend $50 Billion to Make the World a Be...
: Every $1 spent should be measured by how many lives it saves or how much economic growth it generates. : Don't just identify "big" problems; identify which