A listener forwarded this article after hearing the interview with Wesley J. Smith. Author and minister Stephen Vantassel makes the case that Christians and environmentalists cannot support animal rights:
there is no fundamental contradiction between responsibly killing animals, supporting scientific environmentalism and being a Christian. In fact, the contradiction lies with those who reject our right or need to kill animals on the grounds that such actions are anti-environmental or non-Christian. To put a sharper point on the matter, I argue that for Christians and environmentalists to accept the ideals of animal rights is the logical equivalent of saying that one can be a Christian-atheist or environmentalist-litterbug.
As Vantassel notes, Christianity has been eco-friendly since the beginning.