Future of Humanity Institute, Oxford University  https://www.fhi.ox.ac.uk/

Cambridge Institute for the Study of Existential Risk  http://cser.org/

The X-risks Institute  http://www.xrisksinstitute.com/

Is this our final century? Martin Rees’ TED talk on existential risk https://www.ted.com/talks/martin_rees_asks_is_this_our_final_century

Existential Risks: a paper by Nick Bostrom  http://www.nickbostrom.com/existential/risks.html

Our Final Hour by Martin Rees. http://www.goodreads.com/book/show/185583.Our_Final_Hour

Will humans survive the 6th Extinction?  National Geographic http://news.nationalgeographic.com/2015/06/150623-sixth-extinction-kolbert-animals-conservation-science-world/

Human race ‘will be extinct within 100 years’. UK Daily Mail. http://www.dailymail.co.uk/sciencetech/article-1287643/Human-race-extinct-100-years-population-explosion.html

Human Extinction ‘isn’t that unlikely’.  The Atlantic. https://www.theatlantic.com/technology/archive/2016/04/a-human-extinction-isnt-that-unlikely/480444/

Nature Bats Last. Extinction blog. https://guymcpherson.com/

Under a Green Sky by Peter Ward. https://www.amazon.com/Under-Green-Sky-Warming-Extinctions/dp/0061137928

Humanity ‘is getting very close to extinction’. VICE blog. https://www.vice.com/en_us/article/near-term-extinctionists-believe-the-world-is-going-to-end-very-soon

A child born today may live to see humanity’s end… Reuters. http://blogs.reuters.com/great-debate/2015/06/18/a-child-born-today-may-live-to-see-humanitys-end-unless/

2020: The Climate Turning Point https://newclimate.org/2017/04/10/2020-climate-turning-point/