judy: with more than 40 years of experience, al rocher has lived the transition. very trusted source in people's living rooms. probably the only scientists they have seen at any level. >> does not set? what kind of world are we living in. >> all kidding aside, he also explains the climate science behind the weather. >> we are watching climate change make things hotter in the pacific northwest. >> the change has been gradual. al rocher joined several meteorologists at the white house for a summit. >> i think your work has been affected by this. >> they urged them all to use some of their airti to educate americans about climate change. but nothing came of it. >> try to explain for me the reluctance of meteorologists in general to tackle this issue early on. >> i would argue it was not so much meteorologists as it was news directors. they felt like nobody cares. it was like cooking broccoli. >> collectively, tv meteorologists were hard-core deniers for a long time. >> my frustration is with the national media not questioning this. >> a university poll showed 54% of