Either the Earth System would undergo major phase transitions as a result of unchecked human pressure on nature's capacities and resources or a "Grea…

- Hans Joachim Schellnhuber

The first law of humanity is not to kill your children.

- Hans Joachim Schellnhuber

We have 20 years [until 2026] to reduce carbon emissions or climate change will become irreversible.

- Hans Joachim Schellnhuber

When you imagine that if all these 9 billion people claim all these resources, then the earth will explode.

- Hans Joachim Schellnhuber

The planetary machinery tends to be jumpy, this is to respond disproportionately to disruptions that come with the manmade greenhouse effect.

- Hans Joachim Schellnhuber

Don't ask what global climate protection can do for your country; ask what your country can do for climate protection.

- Hans Joachim Schellnhuber

Neither transitions nor transformations will be manageable without novel forms of global governance and markets

- Hans Joachim Schellnhuber

In a sense the U.S. is climate illiterate. If you look at global polls about what the public knows about climate change even in Brazil, China you hav…

- Hans Joachim Schellnhuber

What is the difference between a 2°C world and a 4°C world? Human civilisation!

- Hans Joachim Schellnhuber