Hanna Rosin

There are always signs that a reign is ending, and they are usually spotted not in the king himself but in his court. In the inner circle, latent jealousies between advisers spill into open conflict, as they angrily debate who is to blame for the calamity, chewing over each other's past errors and pointing the finger at old and nascent enemies.

Evolutionary psychology tells us that men, especially powerful men, feel invincible and entitled to spread their seed, and that women can't resist the scent of masculine power. Women, by contrast, are said to be more altruistic and collaborative, seeking power so that they can share it with others.

The importance of heart health became very real for me when my father died of heart disease seven years ago. Having experienced the loss first hand, I am inspired to do everything I can to break the cycle and prevent families from losing loved ones to this preventable disease.