I was talking to my wife the other night as we were walking home from the railway station in Picton which is out in the country after commuting from the city. Whilst I was looking up at the sky I asked her about the craters on the moon and how they were formed. My wife is an intelligent woman and has held many senior roles in a long career in telecommunications and she stated that she did not know that there were craters on the moon, let alone whether they were impact craters or volcanic craters. She thought that they were just shadows or clouds. She did not realize that you could see craters on the moon from that far away. I then realized that many people probably do not know this simple but easy to overlook fact about an object that they have looked at since they were able to crane their heads upwards. To keep it simple, the majority of the craters on the moon are impact craters. The oldest ones are presumed to be volcanic craters surrounded by lava flows which make up the mare or seas of the moon and date from the beginning of its existence. This simple fact astounded her as I am now sure it would astound many others. It is so easy to get lost in your own specialization, as I have, and assume that others know the basics that you do. This is a stupid thing to do and I thank my beloved wife for bringing it up this cold and crisp winters' evening. I have to keep this book simple and clear like the sky that night. This book will introduce you to radical and different concepts that I will bring together into one single hypothesis. That cosmic bombardments created and ended Ice Ages, brought forth major extinction events and almost ended life on this planet as well as introduced it.This book is not intended for scientists. It is intended as a series of questions, statements and summations in the form of a long and complex conversation that also covers an impact history of the Earth from the very beginning to only very recently geologically speaking. You will find out about cataclysms and cosmic impacts that you never learnt about at High School. Our planet's history is radically different from that which we are taught and the scientific establishment prefers to keep to itself. Yes, many scientists might know every postulate and question in this book but they are not exactly sharing it. This book is about sharing it. All of it.