Don’t you wish we could go without sleeping? We could accomplish much more in our days. We spend one third of our lifetime sleeping. Imagine that! But why do we sleep? Common sense would tell us that we sleep to recuperate our energy from a day’s work. But sleeping is a far more complex process...

Do you remember your second birthday or your first day of pre-school? Most of us would answer “no” to these questions. As adults, we can remember many events from middle childhood, around age 5, to the present day. Why can’t we remember earlier times?The inability to recall events before...