Could a "techno-fix" be the answer to global warming?

The idea of a techno-fix as a way to cool the planet caught my attention last week, after reading a story in the Guardian about geo-engineering.

The title of that Guardian piece, Geo-engineering: green versus greed in the race to cool the planet, took me back to 2009, when I was deciding what to call my first novel. My publisher and I settled upon The Human Race, but two of the main contenders for the title were Greed and Greed V Green. Why? Because the central themes of the...