Apparently a natural cooling trend means that Global Warming is going to take a 10-year break.

The press release says that with this additional information, natural decadal climate variations, which are superimposed on the long-term anthropogenic warming trend, can be predicted. The improved predictions suggest that global warming will weaken slightly during the next decade.

So when there's a cooling trend, it's considered a natural climate variation, but the warming trends are definitely man-made.