000			01971nam a22002657a 4500
008			090517t xxu||||| |||| 00| 0 eng d
020			_a1422906507
082			_a551.5 _bHIS
245			_aA Global Warning? : _bAfter 650 million years of climate change, is global warming simply a naturally occuring phenomenom, or the result of human activity? / _h[videorecording] : _cwritten & directed by Alex Hearle ; produced by Pioneer Productions for the History Channel.
260			_aNew York : _bA & E Television Networks, _cc2008.
300			_a1 videodiscs of 1 (DVD) (ca. 94 min.) : _bsd., col., stero ; _f1 disc DVD _c4 3/4 in.
306			_a94 min.
440			_94743
500			_aAudiovisuals.
520			_aArctic ice is melting, sea levels are rising and glaciers are shrinking at alarming rates. And the Earth is getting unmistakably warmer. But is this vast potentially catastrophic climate change the result of human behavior? Or is it simply the Earth's natural cycle of warming and cooling periods that have occurred since the planet formed? An in-depth study of the science behind this controversial hot-button issue. Scientists explore the skies to examine the warming effects of the sun and dig deep into the Earth to study continental movement and the volatile activity at the planet's core. Experts speculate on how natural events including volcanic eruptions and massive meteor impacts have affected temperatures and weather systems over the planet's 600-million-year history.
650			_aGlobal warming. _94778
650			_aClimatic changes _94778 _vHistory.
650			_aGreenhouse effect, Atmospheric. _94778 _vHistory.
650			_aIce caps. _94779
650			_aGlobal temperature changes _94780
650			_94746
650			_94747
942			_2ddc _cVD
952			_3inv2011 _w2009-05-18 _p000016362 _r2011-10-10 _40 _epurchase _00 _u16788 _bMAIN _10 _o551.5 HIS _d2009-05-18 _8Baccah _70 _cAV _2ddc _yDVD _s2011-10-04 _l2 _aMAIN
999			_c11542 _d11542