With regards to food being thrown away by supermarkets/stores - so much of it is a day past it's "best before" date (at least on this side of the pond), but that's the ONLY thing that's wrong with it - some print on the packaging

. Case in point - I try to buy potatoes ONLY when they are on sale in big bags (and then, buy bulk), because this is the last day of "best before", printed on the batch. They are selling them for pennies (it is not even half price, it is a fraction of), in my local Tesco.
Remembering days, when you'd buy a winter supply worth of potatoes, from your semi-local farmer, to store it in your cellar (even if you were living in an inner city in Cracow - and everybody would do that), I am having a healthy laugh at precise "Umpteenth of Jabenary, 2013" "Best Before" date printed on 'tatters, and all the way to the bank. They are just perfect, these tatters, and even good few months after, when we are finally through them.
With regards to climate change, destroying
the Earth. I was worrying about us destroying a miraculous planet, the species and life on it, a good while ago. But the thing is,
the only thing we can destroy, is (at worst) ourselves. We cannot possibly destroy life on Earth, life is too tough, and will prevail. Secondly, all the climate change models are assuming the same, or slowly increasing, or slowly reducing levels of CO2 emissions. But here's the thing - our industrial economy will (inevitably) collapse at some stage, if not for other things - then BECAUSE of a climate change, and that's it - the emissions will become insignificant and fully sustainable again. No, it won't be pleasant while it does collapse. But I think it will stop us humans as a species, from finishing ourselves off.
If someone manages to live through the collapse stage, is yet another story...