4Although plastic induces environmental damages, almost all water bottles are made from 5 plastic and the consumption never stops increasing. This study evaluates the consumers' 6 willingness to pay (WTP) for different plastics used for water packaging. Successive messages 7 emphasizing the characteristics of plastic are delivered to participants allowing explaining 8 the influence of information on the consumers' WTP. We find that information has a mani-9 fest effect on WTP. We show there is a significant premium associated with recycled plastic 10 packaging and organic and biodegradable plastic packaging. As there is no consensus on the 11 plastic which is the most or the least dangerous for the environment, we propose different 12 policies for protecting the environment. We discuss about the impact of these policies on

In France, home confinement is not a common preventive measure against an influenza pandemic, although it is used around the world. Based on a stated method approach, we analyze the attitude that the French would adopt if this measure were put in place. Next, we propose a cost-benefit analysis to discuss the cost-effectiveness of this measure. We find that over three-quarters of respondents report complying with home confinement. Their choice depends on their individual characteristics, the interaction they may have with an infected person and home confinement conditions, but not their experience with preventive measures. We find that behaviors such as sensitivity to certainty, selfishness and altruism emerge. As far as cost-effectiveness is concerned, our study shows that home confinement is a prevention path that should not be neglected and should even be prescribed.