He also requests that the panel, led by University of Pennsylvania President Amy Gutmann, recommend «any actions the Federal government should take to ensure that America reaps the benefits of this developing field of science while identifying
appropriate ethical boundaries and minimizing identified risks.»
It has been suggested that a top - down allocation approach is more
appropriate for
boundaries where human activities exert a direct impact on the Earth (that is, climate change, ocean acidification, ozone depletion and chemical pollution), while a multiscale approach is more
appropriate for
boundaries that are spatially heterogeneous (that is biogeochemical flows, freshwater use, land - system change, biodiversity loss and aerosol loading).8 Even with a top - down approach and a single global
boundary, however, allocation is fraught with difficult
ethical issues.