Peter Singer delves into Environmental Ethics and instantly reveals he doesn’t know what he’s talking about:

He also scored Bush’s refusal to sign the Kyoto protocol on global warming as a refusal to take responsibility for the large amount of climate-altering gases released into the environment by the United States

President Bush did not need to sign Kyoto because President Clinton had already signed it! He was too, erm, reticent, though, to send it to the Senate.

Yet, consitutionally, there’s nothing to stop the Senate considering a signed treaty for ratification. So perhaps Prof. Singer should be asking why the incoming Environment and Public Works leadership haven’t even floated the idea, and excoriating them for unethical behavior if they don’t. Further thoughts on that here.