Well you cannot measure somethings such as consciousness. What is its weight? To ask such a thing ignores the nature of reality. Science is about measurement. so can we claim because there is no scientific evidence to measure consciousness its reality is not true. Such an approach is nonsense and takes consciousness to even observe a measurement. Is history science? Is there any scientific proof for history? Is there any scientific proof for science?
Of course science is not the only way to truth. It has gained a lot of strength because the applications of science have radically changed the way we interact with the world (and the way we live our lives). This makes that many people can not see beyond science.
I dont know if history is a science, I think it is a non-formal science; anyway "history" is something like a definition, you dont need proof for definitions (I guess).
But beyond science we can talk about logic. The logic is a science, and in turn the soul of science is logic. Based on logic, something borning from nothing makes no sense.