I assume that they've taken their cue from the Sierra Club's legal arm, EarthJustice.

I've often wondered the same thing - how could one possibly be "unjust" toward a tree, a river, a pile of rocks, or the planet as a whole?  That is, without adopting some mushy, pantheistic superstition about 'cosmic consciousness' within inert matter?  

These people alas don't understand very much about either the climate, nature, or about the concept of 'justice', I fear.   It's truly weird - and to be honest, a little scary to see this attitude among modern university students.

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