The number of species on earth
The relationship between human actions and the sixth mass extinction
“We are not […] just another species going about its business in the greater evolutionary scheme of things, an argument that gives carte blanche to those who would destroy the Earth for their own short-term gain.” Quoted from: 6th Mass Extinction Happening Now? These Scientists Say Yes
“A more philosophical way of viewing biodiversity is this: it represents the knowledge learned by evolving species over millions of years about how to survive through the vastly varying environmental conditions Earth has experienced. Seen like that, experts warn, humanity is currently ‘burning the library of life’.” Quoted from: What is biodiversity and why it matters to humans.
For a discussion of the discrepancy between media coverage of climate change and biodiversity see: Our House Is Burning: Discrepancy in Climate Change vs. Biodiversity Coverage in the Media as Compared to Scientific Literature