000			01908nkc a22001817a 4500
005			20190129144544.0
008			190129b xxu||||| |||| 00| 0 eng d
024			_q841887034012
040			_cOC
050			_aTD348 .K55 2018
245			_aKiller floods [video recording] / _cseries produced and directed by Oliver Twinch ; produced by Olive King.
260			_a[Place of publication not identified] : _bPBS Distribution, _cc2018.
300			_a1 videodisc : _bsound, color ; _c4 3/4 in.
306			_a(approximately 60 mins.)
520			_aAll over the world, scientist are discovering traces of ancient floods on a scale that dwarfs even the most severe flood disasters of recent times. What triggered these cataclysmic floods and could they strike again? Over a vast expanse of Washington State called the Channeled Scablands, the level prairie gives way to bizarre, gargantuan rock formations: house-sized boulders seemingly dropped from the sky; a cliff carved by a waterfall twice the height of Niagara; and potholes resemblig ones scoured out by rivers today, but ten times bigger. Like forensic detectives at a crime scene, geologists study these strange features and reconstruct catastrophic Ice Age floods more powerful than all the world's top ten rivers combined. NOVA follows their efforts to uncover the geologic fingerprints of other colossal megafloods in Iceland and-improbably-on the seabed of the English Channel, where hundreds of thousands of years ago, another deluge smashed through a land bridge connecting Britain and France and turned Britain into an Island for the first time. These great disasters ripped through terrain and transformed continents in a matter of four hours-and similar forces reawakened by climate change are posing an active threat to mountain communities throughout the world today.
650		0	_97058 _aFloods-- _vEnvironmental aspects.
942			_2lcc _cCDDVD
999			_c24921 _d24921