Documents Gollier, Christian 6 results

"L'humanité a rendez-vous avec son destin. L'exploitation des énergies fossiles qui a fondé notre prospérité nous met désormais en péril. Production de gaz à effet de serre, consommation énergétique à outrance, il devient urgent d'opérer un changement profond de notre mode de vie. Pour gagner cette guerre mondiale contre les dérèglements climatiques, d'indispensables sacrifices sont nécessaires, à commencer par l'application du principe pollueur--payeur. Les Français y sont-ils prêts ? Si la fin du mois passe avant la fin du monde, la responsabilité des citoyens envers les générations futures est cependant déjà engagée.
Loin des sentiers battus, Christian Gollier exprime ses espoirs et ses doutes quant à notre capacité à relever le défi climatique. S'il dresse un constat implacable, il propose aussi des solutions économiques concrètes pour préserver l'avenir de tous."

"Assuming that there is no other solution than herd immunity in front of the current pandemic, on which categories of citizens should we build this herd immunity? Given the fact that young people face a mortality rate which is at least a thousand times smaller than people aged 70 years and more, there is a simple rational to build it on these younger generations. The transfer of some mortality risk to younger people raises dfficult ethical issues. However, none of the familiar moral or operational guidelines (equality of rights, VSL, QALY, ...) that have been used in the Western world over the last century weights the value of young lives 1000 times or more than the lives of the elders. This suggests that Society could offer Covid protection to the elders by conning them as long as this herd immunity has not been attained by the younger generations. This would be a potent demonstration of intergenerational solidarity towards the most vulnerable people in our community. The welfare gain of this age-specic deconfinement strategy is huge, as it can reduce the global death toll by more than 80%. "

"Climate change poses an existential threat. The authors argue that carbon pricing and green research and development (R&D) support are good economics, but their implementation can be improved. Even if carbon prices are generalized and given more substance, green R&D is still likely to be smaller than needed. Much more money must be spent on it than is now the case, and this money must be properly allocated in order to have an impact. Moreover, done well, other policies, such as standards, bans, and targeted subsidies, can be good economics. But they have often been incoherent and their implementation is delicate. The authors also argue that domestic and international compensation is key to the acceptability of efficient policies. Finally, although a country's emissions will not materially alter the course of climate change, individual countries can still show the way ahead: They can develop technologies that can be used by other, poorer, countries. They can provide leadership/momentum on global agreements and on the need to fund climate change policies in developing economies."