Sentences with phrase «vigorous scientific debate»

Second, Hancock's impact hypothesis comes from scientists who first proposed it in 2007 as an explanation for the North American megafaunal extinction around that time and has been the subject of vigorous scientific debate.
The cause of the MSC has been the subject of vigorous scientific debate, but now an international team of researchers led by Otago geologist Dr Christian Ohneiser have used a multidisciplinary approach to solve the puzzle.
As a result, several thousand of Fukushima's 2 million residents have been thrust into the middle of a vigorous scientific debate about the health effects of long - term exposure to low levels of radiation.
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