Bill McGuire, a Professor of Geophysical & Climate Hazards at University College London, tweeted, "If I am brutally honest, the only realistic way I see emissions falling as fast as they need to, to avoid catastrophic climate breakdown, is the culling of the human population by a pandemic with a very high fatality rate." After justified backlash from social media users, McGuire deleted his post and whined that people were deliberately taking his words out of context. Animal rights activist Jane Goodall once floated reducing the Earth's population to what it was 500 years ago.

.One government climate scientist made the mistake of blurting out the real end-game of so many radical environmental activists in a bid to preserve the planet: Killing off the human population.

Bill McGuire, a Professor of Geophysical & Climate Hazards at University College London (UCL), authored a tweet Sunday that lamented the fact carbon emissions were not falling nearly as fast as needed and suggested solving the "climate crisis" with a deadly pandemic to wipe out swaths of the human population.