More food for thought (and a picture of a sloth)

Two species of three-toed sloth — 15 million years of evolution.

A great News Feature in the journal Nature in 2007 about Conservation Priorities: What to let go summarizes some of the key work in this field of research.

It expands the idea of Conservation priorities into two areas we have not discussed yet - taking account of taxonomic distinctiveness (hence the sloth) and cost

“You could make an analogy with art,” says Isaac. “You are in a spaceship leaving Earth with three paintings. Do you take three Rembrandts, or do you take one Rembrandt, one Leonardo and one Picasso?”