Meat reared on land matures relatively quickly, and it takes only a few pounds of plants to produce a pound of meat.

When you think about the real cost of so-called cheap energy that has driven our prosperity to unprecedented levels, for some of us, to our horror, we've realized that this has the potential for burning brightly and then snuffing out.

The ocean governs the climate and the weather, it is taking care of the temperature and it is shaping the chemistry of our planet.

If I seem like a radical it's because I have seen things that others have not.

Most of life on Earth has a deep past, much deeper than ours. And we have benefited from the distillation of all preceding history, call it evolutionary history if you will.

Humans have always wondered the big questions, "Who am I? Where have I come from? Where am I going?" It's part of human nature. It's perhaps the underpinnings of religion.

If somebody dumps something noxious in my back yard, the dumper is the last one I would call on to repair the damage.