The buck stops with me, but I can tick off dozens of very good senior executives that are responsible for hundreds or thousands of people who work for me.

News - communicating news and ideas, I guess - is my passion. And giving people alternatives so that they have two papers to read (and) alternative television channels.

There is so much media now with the Internet and people, and so easy and so cheap to start a newspaper or start a magazine, there's just millions of voices and people want to be heard.

We're starting with our own carbon footprint. Not nothing. But much of what we're doing is already, or soon will be, little more than the standard way of doing business. We can do something that's unique, different from just any other company. We can set an example, and we can reach our audiences. Our audience's carbon footprint is 10,000 times bigger than ours... That's the carbon footprint we want to conquer.

Climate change poses clear, catastrophic threats. We may not agree on the extent, but we certainly can't afford the risk of inaction.

Becoming carbon neutral is only the beginning. The climate problem will not be solved by one company reducing its emissions to zero, and it won't be solved by one government acting alone. The climate problem will not be solved without mass participation by the general public in countries around the globe.

If the head man in a company is not working 12 hours a day, doing things, taking risks, but also standing with his people in the trenches at the most difficult of times, then the company loses something.