What we are seeing now is probably the first large animal that has ever gone extinct merely as an indirect consequence of human activity: a victim of market forces and our collective lifestyle. (dotearth.blogs.nytimes.com)
Huge uncertainties make it difficult to predict the magnitude of consequences of human activity in the deep ocean. (savethehighseas.org)
«The upward march is neither surprising nor unexpected as a direct consequence of human activities; it is only alarming in the sense that it keeps happening unabated.» (climatecentral.org)