Are we on the road to mass extinction? More scientists, from different fields of study, say that is possible, as we pollute the atmosphere and oceans.

We'll explore that - the worst case scenario - in this edition of Radio Ecoshock.

I'm going to dedicate this program to one such scientist, Dr. Andrew Glikson, an Earth and Paleoclimate specialist, from Australian National University.

We featured Andrew Glikson in our Radio Ecoshock show, May 1st, 2009. You can download that free from our web site, ecoshock.org.

We'll also interview a top scientist from Yale, Dr. Mark Pagani. His recently released study shows a hot greenhouse world, just 5 million years ago, with CO2 levels similar to those we have already put into the atmosphere. We'll talk about what the IPCC may have missed.

And we'll keep coming back to the mother of all climate nightmares: the dying oceans, which could wipe out most land species as well. Including us. You'll hear clips from an important speech, "Brave New Oceans" by Jeremy Jackson, Scripps Professor of Oceanography. He too warns we are heading toward a mass extinction event. And Jackson is far from alone.

But first, we'll start with a drop of good news: Bill Gates, the world's richest man, has finally discovered dangerous climate change. Here is how Gates began his speech to TED, the Technology, Entertainment and Design series, on February 12th, 2010.

READ MORE (with links to more audio, video and references)