Noted microbiologist claims human race will go extinct in a hundred years

Noted microbiologist Frank Fenner is publicly predicting that the human race will cease to exist over the next hundred years due to climate change, dwindling resources and overcrowding. Fenner was one of the principle leaders in the eradication of smallpox and has been issuing warnings before, but until none quite this dour. He believes the critical point of possible survival by making adjustments has been passed.