Marine mammals and sonar concern, but very little definitive information was known. In 1995 a comprehensive book on the relation between marine mammals and noise had been published, and it did not even mention strandings. In 2013, research showed beaked whales were highly sensitive to mid-frequency active sonar. Blue whales have also been shown to flee from the source of mid-frequency sonar, while naval use of mid- and high- frequency side-scan sonar was deemed 'the most probable cause' of a mass stranding of around 50 short-beaked common dolphin ("Delphinus delphis") on 9 June 2008 in Falmouth Bay, Cornwall, UK. There was anecdotal evidence from
Scientific temper to waste, of a rich country inhabited by starving people." The genesis and development of the idea of the scientific temper is connected to ideas expressed earlier by Charles Darwin when he said, "[F]reedom of thought is best promoted by the gradual illumination of men's minds, which follows from the advance of science," and by Karl Marx when he said, "Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people. The abolition of religion as the illusory happiness of the people is the