Able Quote by Eric Pianka

Our planet's lands and oceans are already stretched to meet the demands of 7 billion people. The human population continues to grow. The search…

— Ban Ki-moon

We need to continue to decrease the growth rate of the global population; the planet can't support many more people.

— Nina Fedoroff

Our presence on this planet does not seem to be sustainable. Our technological civilisation makes up particularly vulnerable. There is talk all over the…

— Werner Herzog

But we are not going to be able to survive on this limited planet if the population keeps on growing: there isn't going to…

— Prince Philip

The health of our home planet and the survival of our species will only be secured through the use of space resources and the…

— Bob Richards

We have all this very clever technology and all these abilities to manipulate the world in all these ways, yet we are faced with…

— David Grinspoon

“If we're going to survive as a planet with more than 6 billion people without destroying the complex balance of our natural ecosystems, the…

— Steven Johnson

We can survive as a population only if we conserve, develop sustainably, and protect the world's resources.

— Silvia Cartwright

Humankind has suddenly entered into a brand new relationship with our planet. Unless we quickly and profoundly change the course of our civilization, we…

— Al Gore

It's obvious that the key problem facing humanity in the coming century is how to bring a better quality of life - for 8…

— E. O. Wilson

I think we have more planets that could serve human massive increasing population. but unless we do something about this, in ratio of our…

— ROBERT RONO

We need to radically and intelligently reduce human populations to fewer than one billion. We need to eliminate nationalism and tribalism and become Earthlings.…

— Paul Watson