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question 2: why do we have emotions?

Joy, grief, gnawing anxiety... We have a rich spectrum of emotions which we often see as opposites to our ability to be rational. Why has evolution provided us with these apparently irrational 'disturbances'? What's the point of feelings?  Read more

question 9: why do children play?

Children laugh on average 400 times a day, adults 25 times. Why do we stop laughing? And why do we stop playing – most of us anyway? Is play simply a form of learning, a preparation for the future?  Read more

question 51: is it riskier to have an older father?

It is a fact that women cannot bear children after the menopause. However, new research shows that men's sex cells also have a best-by date. And the number of mutations in the genetic material is actually larger in men than in women. What do these findings mean?  Read more