If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.

For the first time since life appeared on earth, one species- us- is single-handedly altering the physical, chemical and biological nature of earth. We have become a force of nature

We now have access to so much information that we can find support for any prejudice or opinion.

The medical literature tells us that the most effective ways to reduce the risk of heart disease, cancer, stroke, diabetes, Alzheimer's, and many more problems are through healthy diet and exercise. Our bodies have evolved to move, yet we now use the energy in oil instead of muscles to do our work.

Love is the force that makes us fully human.

I've always been more interested in organisms that can move on their own than in stationary plants. But when I canoe or hike along the edge of lakes or oceans and see trees that seem to be growing out of rock faces, I am blown away. How do they do it?

Canada, more than any nation, will be affected by rising sea levels from global warming.