Does global warming trump all hot-button ethical issues?

[Joelle]

Does global warming trump all hot-button ethical issues?
      

Imagine you go to a conference on major bioethical questions -- controversial issues like abortion, embryonic stem cells, assisted reproduction and euthanasia -- and a keynote speaker uses all his allotted time warning about global warming. Is this the wrong issue to discuss -- or the only one worth talking about?
The question arose at the [...]
         

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