A reason leaders behave inconsistently is a phenomenon called 'moral licensing.' When people do or say something virtuous, they seem to feel licensed to act in ways that might otherwise call their virtue into question.

Leaders working extremely hard for the common good, m...

Most of us actually know that exercise is important, but this is not enough to motivate us.

The idea that we only need to educate people and give them the right information and then they will behave better or change their lifestyles is not true.

All the foods that you regularly eat are ones that you learned to eat.  Everyone starts life drinking milk. After that, it’s all up for grabs. 

But in today’s food culture, many people seem to have acquired uncannily homogenous tastes: food companies push foods high in sugar, fat and...