A kidney donation chain could narrow the huge gap between organ supply and demand. Kidney matchmaker and transplant surgeon Jayme Locke explains how.

Dave Troy makes “people maps,” graphics that visualize cities and communities by people’s interests rather than their geography. Here he looks at the various divides in St. Louis, Missouri and asks if we might use this kind of analysis to predict the next Ferguson.

Dave Troy crunches data to see places not as neighborhoods but as relationships between people.

What can American parents learn from how other cultures think about parenting? A look at attitudes in Norway, Japan and Spain on the pressure to “parent” kids (as a verb).

Rachel Sussman is obsessed with very old things that are still alive. She has spent years researching and tracking down the world’s oldest organisms. Here, take a look at just some of her photographs, and watch her 2010 TED Talk on the topic.