Lower-income adults with an aging parent, spouse or partner are more likely to be caregivers than those in higher income tiers. Fresh data delivered Saturday mornings Thank you for subscribing!

Amanda Smith is a freelance journalist and writer. She reports on culture, society, human interest and technology. Her stories hold a mirror to society, reflecting both its malaise and its beauty.

In the Big Data era, data is not only becoming bigger and bigger; it is also becoming more and more complex. This translates into a spectacular increase of the dimensionality of the data. For example, ...