Answers Quote by Neil deGrasse Tyson

I would be very happy to see 3.5 billion humans wiped out from the face of the earth within the next 150 or 200…

— John Aspinall

The action we take in the next few years will impact the Earth hundreds of millions of years from now.

— Louie Psihoyos

Even though I now know that it's likely the Earth will suffer through mega-volcanoes or meteor strikes that could take out millions or billions…

— Annalee Newitz

We, Homo sapiens, destroyed the majority of the large mammalian species in North America and Australasia just over 10,000 years ago. We, Homo sapiens,…

— Michael Smith

It’s unlikely that any of those natural hazards will do us in within the next 100 years if we’ve already survived 100,000. By contrast,…

— Nick Bostrom

At the end of the century, humans will look back at our impact on the planet and World War II will be a footnote…

— Louie Psihoyos

Protecting our future on this planet depends on the conscious evolution of our species.

— Leonardo DiCaprio

The human race may well become extinct before the end of the century. Speaking as a mathematician, I should say the odds are about…

— Bertrand Russell

“There is nothing new about prophecies to the effect that the end of the world is near if we do not repent. What is…

— Jared Diamond

“Any environmental biologist or statistician will tell you that humankind’s best chance of long-term survival occurs with a global population of around four billion.”

— Dan Brown

Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change the environment…

— Stephen Hawking

We'll lose more species of plants and animals between 2000 and 2065 than we've lost in the last 65 million years. If we don't…

— Paul Watson