When you're sitting in front of a screen, you're not using all of your senses at the same time. Nowhere than in nature do kids use their senses in such a stimulated way.

As the nature deficit grows, another emerging body of scientific evidence indicates that direct exposure to nature is essential for physical and emotional health. For example, new studies suggest that exposure to nature may reduce the symptoms of Attention Deficit Hyperactivity Disorder (ADHD), and that it can improve all children's cognitive abilities and resistance to negative stresses and depression.

Some kids don't want to be organized all the time. They want to let their imaginations run; they want to see where a stream of water takes them.

These days, unplugged places are getting hard to find.

If war occurs, that positive adult contact in every shape is needed more than ever. It will be a matter of emotional life and death. There's not a handy one-minute way of talking to your kid about war.

What would our lives be like if our days and nights were as immersed in nature as they are in technology?

A lot of people think they need to give up nature to become adults but that's not true. However, you have to be careful how you describe and define 'nature.