Peter Singer[0] is one of the 3 editors. The editorial board, mostly moral philosophers, includes J.M. Coetzee, Jonathan Glover[1] and Jonathan Haidt[2].

[0] Animal Liberation, Practical Ethics et al.

[1] Author of many books including Humanity: A Moral History of the Twentieth Century - one of the most outstanding, horrifying, memorable books I've ever read.

[2] Author of The Happiness Hypothesis (I can't recommend it more highly), The Coddling of the American Mind etc.