Ok. Now I'm really confused

According to the BBC,

Research presented at a major European science meeting adds to other evidence that cleaner air is letting more solar energy through to the Earth's surface.

But just a few moths ago they said,

They believe soot is twice as potent as carbon dioxide, a main greenhouse gas, in raising surface air temperatures.

Now which way is it? I think the gas from these greenhouse people are raising my temperature. I'd like to nuke 'em all.