Have you ever wondered what is the new smoking? In the 1950s people smoked having no idea of the dangers. I wonder what we are doing now that our kids will look back with surprise at our naivete.
I wonder if we will one day discover that WiFi and sugar – two of my favorite things will one day be shown to be far more dangerous than we would have ever hoped or imagined. Check out these articles:
Sweet poison: How sugar, not cocaine, is one of the most addictive and dangerous substances

Think these authors may be onto something? Any other things about which we should be more careful?
