Tonight I watched the scariest TV I've seen in a long time. Horizon was about a phenomenon I'd never heard off called Global Dimming. It seems that all this global warming we've been worrying about has been partly cancelled out by sunlight being blocked by all the crap we put in the air. Now that we put out 'cleaner' gas from our cars and power stations the dimming effect is lessening, but this means that warming may accelerate. There was a prediction of a 10C rise in the next 100 years! That is seriously bad news.

So what can we do? As individuals very little apart from making an effort to cut consumption of energy and goods. I try to do little bits like not using more lights than necessary and driving economically, but I do drive about 400 miles a week just to work, which is not really a good thing, but I'd struggle to find a comparable job nearer to home.

The politicians need to really wake up and do something. Air travel is too cheap and needs to pay towards the damage it does. Do people really need to fly that much? If it's this cheap they will do it more.

For the sake of our children we need to do something right now.