The Waters Rising (Sherri Tepper)

A complex, fantastic tale of a post-apocalyptic land, after the Big Kill that resulted from the reckless use of technology. This world has talking animals (left over from genetic engineering experiments) and killing curses (from old biological weapons), and people drawn together by destiny to save humans from the rising waters and ancient killing machines. I found the mix of technology and fantasy unconvincing, along with the big underlying reality, which is that the waters are rising now not just because of climate change but because a huge icy comet that had been trapped in the earth when it originally formed had broached its boundaries, and the water it was made of was being squeezed out to drown the entire world, right up to the highest mountains. The solution to this problem didn't really convince me, either. So while it was a pleasant enough story, it didn't really work well for me.