Making consumer choices that reward eco-friendly products and companies is a great way to start.

The Internet empowers individuals to play a more active role in the political process, as Obama's campaign has manifested.

Well-established theories collapse under the weight of new facts and observations which cannot be explained, and then accumulate to the point where the once useful theory is clearly obsolete.

I decided to pick the diet that I thought would maximize my chances of long-term survival.

What we take for granted might not be here for our children.

Global warming pollution, indeed all pollution, is now described by economists as an “externality.” This absurd label means, in essence: we don’t to keep track of this stuff so let’s pretend it doesn’t exist.

Global warming is real and human activity is the main cause. The consequences are mainly negative and headed toward catastrophic, unless we act. However, the good news is that we can meet this challenge. It is not too late, and we have everything we need to get started.