Carbon offsetting & future-oriented projects

Like many in the telecoms industry, I spend quite a lot of my life at airports & on planes. I'm looking into the whole area of carbon offsets, which seems to be quite a minefield from both a scientific and economic point of view. Realistically, "not flying" is not an option - a substantial part of my income results from physical meetings with people - for example delegates at conferences, with whom I chat over lunch or a beer.

There are also a variety of offsetting approaches - such as those listed by the Economist here "Some plant trees to soak up carbon dioxide. Others prevent existing trees from being chopped down. Replacing fuel-guzzling stoves in China and India with more efficient ones is popular, as is collecting methane from rubbish dumps and using it to fuel power plants. NativeEnergy, Mr Gore's favoured supplier, offers offsets from wind turbines on farms owned by Native Americans"

All this sounds worthy. But I'd prefer to pursue projects that fit in with my general view on climate change & the environment - that insufficient emphasis is placed on "big science" and forward-thinking technologies. Rather than forcing humankind down a dreary & misanthropic path of "sustainability" and changing our entire economic & social structures, I think we should spend more effort & resources looking at innovations that allow us to maintain or even intensify our current lifestyles.

Longer term, this could mean nuclear fusion, or semi-scifi approaches like geoengineering (look it up), electromagnetic orbital tethers, or giant heat exchangers pumping heat out of the atmosphere into the earth's core (OK, I thought that one up in the pub myself).

I don't have anything against wind, wave, solar, tidal or geothermal renewables (or energy conservation schemes), but I'm unconvinced they're the answer to all our problems, and I'm also wary of implicitly supporting the "sustainability nannies".

But in the shorter term - does anyone know of any offset schemes that invest in either conventional nuclear power or some non-tree form of carbon sequestration?