CNN: Keeping global warming down to a level people can live with means cutting carbon emissions to "near zero" by the end of the century, even in an increasingly industrialized world, the top U.N. experts on the issue reported Sunday.
That may be doable, but it will take "substantial investments" in everything from planting more trees to replacing fossil fuels with low-carbon power sources like solar, wind and nuclear energy, the Intergovernmental Panel on Climate Change announced in its latest report....