ZOE CORBYN: Australian philosopher Peter Singer’s book Animal Liberation, published in 1975, exposed the realities of life for animals in factory farms and testing laboratories and provided a powerful moral basis for rethinking our relationship to them. Now, nearly 50 years on, Singer, 76, has a revised version titled Animal Liberation Now. It comes on … Continue reading Peter Singer: ‘There’s no reason to say humans have more worth or moral status than animals’