Climate change - what to do?

The Wall Street Journal has an interesting article on 5 technologies which could provide a breakthrough:

"Over the next few decades, the world will need to wean itself from dependence on fossil fuels and drastically reduce greenhouse gases. Current technology will take us only so far; major breakthroughs are required.

What might those breakthroughs be? Here's a look at five technologies that, if successful, could radically change the world energy picture."

The technologies referred to are:

* Space based solar power
* Utility scale energy storage to enable a high percentage of solar and wind
* Next Generation Biofuels
* Carbon capture and storage
* Advanced Car Batteries

Also very interesting is a critique of this article at Next Big Future which puts these new technologies too far in the future and gives some alternatives which will impact sooner.

While most technologies above are nothing that we can implement or research here there are exceptions. Of particular interest, it seems to me, is that of biochar. Basically this means growing wood or woody material, charing it (making charcoal out of it) and burying it. This takes carbon out of the atmosphere and also can have a beneficial effect on the soil.

I should also mention that I saw no mention of the role of forests.