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.

President Shimon Peres has embodied a commitment to the mutual values shared by the United States and Israel - values that include the preservation of life, faith, family and freedom.

I grew up in a working-class family, so I guess you could say I write from what I know.

Nearly all government advice on terrorism sacrifices practical particulars for an unalarming tone. The usual guidance is to maintain a three-day supply of food and water along with a radio, flashlight, batteries and first-aid kit.

I spent a lot of my early blogging career sort of highlighting all the ills of the government in Kenya and all the corruption and problems.