clarify and offer to all the data
If Hansen is correct, let him offer the raw data to the world so that other models can put the numbers through their paces. From my reading, I think the warming has a big man-made component to it. I also think a dependence on fossil fuel is madness, as it leads to wars and economic dependence on many unpleasant regimes, and also is risky, given the finite supply. We further know that it is dangerous (smog, oil spills, etc). So it makes sense for many reasons to cut down the foosil fuel use, and if it even *might* be adding to global warming, why not be sensible and cut it out of our lives?
Scientists can never be definite about anything when they can't control all the variables. It's weight of probabilities. But that is good enough to run huge technical industries on, and good enough to presume on when planning a response to global warming. But science itself is not served if some scientists become too in love with their own data. It has been seen before that unconscious bias easily creeps into selection of data and interpretation. Let's have NASA put all the raw logs online.