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?

The failure of world leaders to act on the critical issue of global warming is often blamed on economic considerations.

The future doesn't exist. The only thing that exists is now and our memory of what happened in the past. But because we invented the idea of a future, we're the only animal that realized we can affect the future by what we do today.

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.

My grandmother was British and in the Women's Auxiliary Royal Air Force in World War II.

But Canada remains a crucial partner in this global war on terrorism, and we are grateful for that. Canadian naval vessels, aircraft and military personnel continue anti-terrorist operations in the Persian Gulf.

I used to want to be a war photographer, and I used to want to be a ballerina and a comedian. I used to want to be a writer. I invalidated myself; it's a mistake for me.

Once brave politicians and others explain the war on drugs' true cost, the American people will scream for a cease-fire. Bring the troops home, people will urge. Treat drugs as a health problem, not as a matter for the criminal justice system.