by Bill Joy - NewScientist.com news service: I work in the area of green technology for energy and resources. The most significant breakthrough would be to have an inexhaustible source of safe, green energy that is substantially cheaper than any existing energy source.
Ideally such a source would be safe, in that it couldn’t be made
into weapons, nor would it make hazardous or toxic waste or CO2. It
seems to me that this is most likely to come from a deep new
understanding of a physical effect at the nanoscale (or smaller) that
allows safe and simple access to fusion – or another completely
unexpected energy technology
Bill
Joy co-founded Sun Microsystems. He is now a partner in the venture
capital firm Kleiner Perkins Caufield & Byers, based in Menlo Park,
California
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Source: http://www.newscientist.com/channel/opinion/science-forecasts/dn10557-bill-joy-forecasts-the-future.html