Some links: longevity, real estate, migrations, the future

I have been away on vacation in Venice--more on that later--but I am back now.

• Old age popped up as a topic in my feed. The Crux considered when human societies began to accumulate large numbers of aged people. Would there have been octogenarians in any Stone Age cultures, for instance? Information is Beautiful, meanwhile, shares an informative infographic analyzing the factors that go into extending one’s life expectancy.
• Growing populations in cities, and real estate markets hostile even to established residents, are a concern of mine in Toronto. They are shared globally: The Malta Independent examined some months ago how strong growth in the labour supply and tourism, along with capital inflows, have driven up property prices in Malta. Marginal Revolution noted there are conflicts between NIMBYism, between opposing development in established neighbourhoods, and supporting open immigration policies.
• Ethnic migrations also appeared. The Cape Breton Post shared a fascinating report about the history of the Jewish community of industrial Cape Breton, in Nova Scotia, while the Guardian of Charlottetown reports the reunification of a family of Syrian refugees on Prince Edward Island. In Eurasia, meanwhile, Window on Eurasia noted the growth of the Volga Tatar population of Moscow, something hidden by the high degree of assimilation of many of its members.
• Looking towards the future, Marginal Revolution’s Tyler Cowen was critical of the idea of limiting the number of children one has in a time of climate change. On a related theme, his co-blogger Alex Tabarrok highlights a new paper aiming to predict the future, one that argues that the greatest economic gains will eventually accrue to the densest populations. Established high-income regions, it warns, could lose out if they keep out migrants.