In digital era, privacy must be a priority. Is it just me, or is secret blanket surveillance obscenely outrageous?

The carbon fuels industry-big oil and coal-have a 50-year lease on the Republican Party and they are drilling it for everything it's worth.

Hurricane Sandy is a disturbing sign of things to come. We must heed this warning and act quickly to solve the climate crisis. Dirty energy makes dirty weather.

The will to act is a renewable resource.

Our civilization is experiencing unprecedented changes across many realms, largely due to the rapid advancement of information technology. The ability to code and understand the power of computing is crucial to success in today's hyper-connected world.

I have felt for a long time that the pathway to solving the climate crisis is through the building of a massive grassroots army of men and women who will go out there and win the conversation on climate, and persuade businesses, and universities, and towns to switch to renewable energy and to reduce emissions. And the big change from ten years ago is that people are way more receptive, not only to the message that we have to act, not only to the message that now we can act, we have the solutions now - that's the biggest change - but also willing to make a commitment that we will act.

Unless we act boldly and quickly to deal with the underlying causes of global warming, our world will undergo a string of terrible catastrophes.