The enzyme Amylase is found naturally occurring in our human saliva. It helps our bodies break down starches into sugars from which we derive the fuel for our functioning. Amylase was the first enzyme to be discovered and isolated. Many human societies have survived on starch based diets like potatoes and rice and have been able to do so thanks to Amylase. Without this wonderful natural enzyme, we would not be here. Thanks, Amylase!
Just how close are we to a Green Economy?
I think the entire question is focused on the wrong issue. For starters, the word "Green" is very general. Most of the time it means sustainable, which I think of as something that puts in as much as it takes out and can keep going like that in perpetuity. I would argue that we need to look beyond sustainability to regeneration: making things better than when we started, generating even more than we take. Another aspect of this questions is that it is offered up within the boundaries of the status quo, as if to ask, "how close are we to making THIS economy green?". It could be said that this economy, based in capitalism, central distribution and the monetary system among other things, is fundamentally unsustainable and therefore could never be truly green.
That being said, I do think that in recent years there has been a sort of awakening beginning to happen in the main stream. The more people are willing to see that there is a problem with business as usual, the more likely we are to make changes. I just hope we don't spend too much of our precious time and resources trying to patch what may be unfixable. When we collectively realize that " We cannot solve our problems with the same thinking we used when we created them" (Albert Einstein) then perhaps we will actually be on the road to creating a better social and economic interaction between each other and the Earth and all of her non-human inhabitants.
Atom Economy Link
I was not excited about the details of this link but the over all concept is a good one. The Atom economy is another important consideration we must make if we are to continue to utilize chemistry to make our everyday products. It seems obvious that we should try to not produce waste if possible, but we seem to overlook the obvious if it is not declared a priority.