Just a couple of hours of physical activity each week adds years to average life expectancy. Katherine Harmon reports

A women who settles down with what she considers to be a stable man might not find him all that attractive while she is ovulating. Christie Nicholson reports

A recent study finds that when we can easily quantify a good we tend to be less happy with it, as opposed to those goods that are less easily quantifiable. Christie Nicholson reports

Researchers develop a model for how we find certain sounds, like nails on a chalkboard, unbearable. Christie Nicholson reports

A small study finds that sleep-deprived fat cells are less sensitive to insulin, a condition that often precedes diabetes. Katherine Harmon reports

A recent twist on the famous "marshmallow test" for children finds that environment and experience play a big role in a child's ability to resist temptation. Christie Nicholson reports

Young adults at risk for getting a sexually acquired infection were more likely to use a condom if they followed a social media's sex education campaign. Katherine Harmon reports

Patients are more likely to follow doctors' orders if they have access to their notes. Katherine Harmon reports

We tend to notice sounds that appear much more often and accurately than sounds that vanish. Christie Nicholson reports

Obese kids have higher cardiovascular risks as adults, and sugary beverages are stoking that obesity epidemic. Katherine Harmon reports