1. Never automatically believe a headline. Confirm for yourself that what it says is in the article.
2. Never believe a reporter’s interpretation of a science paper
The article is actually saying is that particulates formed from burning fossil fuels TEMPORARILY reduce warming but over time when those particles leave the atmosphere it will be worse than predicted.
If you read down aways, you find the key sentence: "Take sulfate aerosols, which are created from burning fossil fuels and contribute to atmospheric cooling"
This was recognized in the 1970s and global cooling became the hot topic.
The result was regulating sulfur in coal and gasoline. Congress eventually(1990) amended the Clean Air Act and now we burn low sulfur coal and remove sulfur from gasoline.
The new Tier 3 gasoline with even less sulfur will be implemented in 2017.
A coal fired power plant is allowed to emit 100 tons of sulfur per year before the regulatory threshold is reached, but if you use natural gas or wind/solar, no sulfur is emitted.