Recent literature is increasingly highlighting the role of individual behaviours for tackling societal challenges like Climate Change. Indeed, the largest source of global greenhouse gas (GHG) emissions is related to electricity and heat production, with residential and commercial buildings being responsible for 60% of global electricity demand. At the same time, the agri-food system is also very energy and carbon intensive and it is responsible for a considerate amount of GHG emissions. Individual behaviours related to electricity, heat, and food consumption may have strong impacts on GHG emissions opening interesting opportunities for climate change mitigation among end-users. In this direction, this paper aims at investigating the impact (if any) of two important 2015 events on consumer behaviour and awareness about the climate and environmental impacts of their everyday choices. Indeed, in current society, media coverage of events has shown to be relevant in affecting consumer perceptions and behaviour. The events analysed are: the release of Pope Francis' encyclical ‘Laudato si’ - On Care For Our Common Home’ about environmental issues and climate change; and the 2015 United Nations Climate Change Conference (COP21) with the signature of the Paris Agreement. Data were collected via interviews with a sample of consumers in the context of Milan, a large European city. Data were analysed by means of descriptive statistics and ordinal regression models. Results indicate that such events have had an effect, mostly on people that have a positive attitude towards such events but were not so much aware about the related discussions beforehand. Policy implications highlight the role of opinion leaders in engaging the segments of population that are not already proactive on the matter, which is indeed the target of well-aimed policies.

最近的文献越来越强调个人行为在应对气候变化等社会挑战中的作用。的确，全球温室气体（GHG）排放的最大来源与电力和热量生产有关，住宅和商业建筑占全球电力需求的60％。同时，农业食品系统也非常耗能和碳密集，并且造成了大量的GHG排放。与电力，热力和食物消耗有关的个人行为可能会对温室气体排放产生重大影响，从而为减少最终用户的气候变化提供了有趣的机会。在这个方向上 本文旨在调查2015年两个重要事件对消费者行为的影响（如果有），以及他们日常选择对气候和环境影响的认识。确实，在当前社会中，媒体对事件的报道已证明与影响消费者的观念和行为有关。分析的事件有：弗朗西斯教皇发布的有关环境问题和气候变化的流行性“ Laudato si”-关于照顾我们的共同家园；以及签署《巴黎协定》的2015年联合国气候变化大会（COP21）。数据是通过采访一个欧洲大城市米兰的消费者样本而收集的。通过描述性统计和序数回归模型分析数据。结果表明，此类事件已产生影响，主要针对那些对此类事件持积极态度但事先对相关讨论了解不多的人。政策含义突出了舆论领袖在使尚未对此事主动采取行动的人群中所起的作用，而这确实是有针对性的政策的目标。