Time spent in Europe last year might have been too short and hurried for me to notice small differences in the way people live and consume.
Fresh from 2 weeks mostly in Southwest France in and around Toulouse (I came back to the US yesterday afternoon), I can share some differences in way people live and consume there compared to Americans in general.
Water consumption, reducing it, is a big thing. Showers are preferred to baths. Toilets offer 2 speeds-strengths for flushing. Individuals use their bath towels at least 2 days in a row and hotels encourage their guests to do the same.
When shopping at local supermarket and looking for milk, I first headed for refrigerated dairy section only to find out that cow milk (as is case for Soy milk in US) is stocked on non refrigerated shelves separate from yogurts, cheese and the like.