The Copenhagen Consensus deals pretty much entirely with this question: http://www.ted.com/index.php/talks/bjorn_lomborg_sets_global_priorities.html http://www

The Copenhagen Consensus deals pretty much entirely with this question: http://www.ted.com/index.php/talks/bjorn_lomborg_sets_global_priorities.html http://www.ted.com/index.php/talks/bjorn_lomborg_sets_global...