The problem with this is that once we've reached a "perilous level of global warming", it is quite possible that there is no way back.
The 2 degrees target seems to be already out of reach and everything beyond that gets closer and closer to being unpredictable. Of course no one knows what exactly will happen anyway. But as an example: If the arctic permafrost starts to melt methane gets released into the atmosphere which further accelerates everything [1].
I would not hope on some not-yet-existing or not-yet-usable technologies to fix everything we're messing up now. The "eventually" when finally everyone stops using fossil fuels because other kinds of energy are cheaper might be just too late.
The 2 degrees target seems to be already out of reach and everything beyond that gets closer and closer to being unpredictable. Of course no one knows what exactly will happen anyway. But as an example: If the arctic permafrost starts to melt methane gets released into the atmosphere which further accelerates everything [1].
I would not hope on some not-yet-existing or not-yet-usable technologies to fix everything we're messing up now. The "eventually" when finally everyone stops using fossil fuels because other kinds of energy are cheaper might be just too late.
[1] http://grist.org/climate-change/2011-12-05-the-brutal-logic-...