In this Back To School episode we consider the "List of Life": the criteria that define what it is to be a living thing. Some are easy calls: A... What makes 'life' so hard to define? A developmental ...

The question of life’s true purpose has baffled humanity for millennia. Philosophers, religious leaders, psychologists, and ...

Challenge your mind right now. Come up with a brief, meaningful, and defensible definition of life. Try it. How hard can it be? You know life when you see it, right? You are life. So put that search ...

How often do we stop to think about the meaning of life? If you’re like me, probably not much. Even though I may feel a vague sense of anxiety around how my life is unfolding and the inevitability of ...

There is no universally accepted scientific definition of life, but most definitions are a variation on: life is the “condition that distinguishes animals, plants, and other organisms from inorganic ...