Highlights: February 3–9

Human beings are social animals, and the tenor of our social life is one of the most important influences on our mental health.

Love is the most profound emotion known to human beings. For most people, romantic relationships are the most meaningful element in their lives. But the ability to have a healthy, loving relationship is not innate. Almost all of us have experienced a failed relationship, and most of us have to work consciously to master the skills necessary to make them flourish.

The human brain has been called the most complex object in the known universe, and in many ways it's the final frontier of science. A hundred billion neurons, close to a quadrillion connections between them, and we don't even fully understand a single cell.