These are the sources I referenced in the “debate”:

- What Is the Anthropocene and Are We in It?: http://bit.ly/2sBN2gz

- Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines: http://bit.ly/2sBN2gz

- Climate-driven declines in arthropod abundance restructure a rainforest food web: http://bit.ly/2QYIIC0

- Border Fences and their Impacts on Large Carnivores, Large Herbivores and Biodiversity: An International Wildlife Law Perspective: http://bit.ly/2QYIIC0

- Carbon Pollution Has Shoved The Climate Back At Least 12 Million Years, Harvard Scientist Says: http://bit.ly/2T3WUv4

- WMO climate statement: past 4 years warmest on record: http://bit.ly/2QXe7Vf

- Arctic Ice Volume: http://bit.ly/2QXe7Vf

- Antarctic Ice Loss Has Tripled Over the Past Decade: http://bit.ly/2U08VBV

- Mass balance of the Antarctic Ice Sheet from 1992 to 2017: https://go.nature.com/2FApX6B

- How Much Heat Does the Ocean Trap? Robots Find Out: http://bit.ly/2RAL6UL

- Direct isotopic evidence of biogenic methane production and efflux from beneath a temperate glacier: https://go.nature.com/2RV1Ll7

- Exclusive: Some Arctic Ground No Longer Freezing—Even in Winter: https://on.natgeo.com/2Ml2lmR

- Future warming increases probability of globally synchronized maize production shocks: http://bit.ly/2W6QopE

- Effect of environmental changes on vegetable and legume yields and nutritional quality: http://bit.ly/2TZzrLN

- How Feedback Loops Are Driving Runaway Climate Change: http://bit.ly/2swlo4K

- William Rees: Cognitive Blindspots; The Road To Extinction: http://bit.ly/2FIzJTg