We urgently need to move toward renewable energy sources: solar, wind, hydro-electric, geothermal, tidal, biomass.
They have been making great strides in recent years; renewable projects are in play in over 80 nations now, and growth rates have been on the order of 30% per year. The technology is much more mature than most people realize, and if we were to make a strong commitment to renewables, we would make a great start toward the lengthy and arduous process of kicking the fossil fuel habit.
We need to do that; we are probably already committed to enough global warming to lose Arctic summer ice cover in the next decade or so--mainstream projections now estimate that to occur by 2030, and I personally expect it sooner. That will add another dollop of warming to the system.
As I say, I don't think this is avoidable anymore, but I do think that it could get a lot worse than that, and that's what we need to avoid.