It is of course irresponsible of me to have a preference from this list when I only read one (and a half) books on it, but I hope Stuff Matters gets the prize!
As for the "half" book, I tried to read Seven Elements That Changed The World, and just couldn't do it. The author is the former head of BP (he who was around when the Gulf spill happened), which I was willing to overlook if it was an engaging read, but no. Self-congratulatory and dull was my verdict after two chapters. Others, obviously, disagree, which is very WRONG of them, but I suppose is there right.