Dr Sarah Chan is challenging the belief that every species on the planet should be preserved.
Her comments have stemmed from a recent report by the Zoological Society of London in which is listed the 100 most critically endangered species in the world. Dr Chan contends that to state that all species have a right to exist would mean that we would be faced with a moral obligation to resurrect all extinct species that have ever lived.
"When we say that all species have an equal right to exist, do we mean just all of the species that currently exist?" she said. "What about the species that have already gone extinct? I donít see any good reason to limit ourselves only to this precise moment in time in terms of the species that we should be concerned about."
"The list of threatened species includes the pygmy three-toed sloth, the Jamaican rock iguana and Tarzanís chameleon."
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