&gt; To the people trying to blame it on human activity it should.<p>It just shows that the climate <i>can</i> change due to natural processes, and that it can change by a great deal if conditions are right. This could happen for a number of reasons, but the rapid, large-scale warming we&#x27;ve seen over the last century can only be accounted for by human activity. All other natural processes have been falsified by scientists.