Terrible drought is raising the wildfire risks. and the northeast also very steamy, records were set yesterday in new york, boston could hit 100 degrees today for the first teaime in ten years. >> and studies show severe heat is three to five degrees hotter than it used to be because of manmade climate change. pedram javaheri explains for us. >> yes, when looking at this sort of a heatwave, this ridge of high pressure is often responsible and we talk about the heat dome that develops. and you have to keep in mind that with an area of high pressure, you get sinking air, when it sinks, it warms ...