James Hansen

There are numerous good James Hansen quotes on climate change. 

The evidence for human-made climate change is overwhelming.

- James Hansen, 2009 (Source)

I have been described as the grandfather of climate change. In fact, I am just a grandfather and I do not want my grandchildren to say that grandpa understood what was happening but didn't make it clear.

- James Hansen (Source)

Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions.

- James Hansen (Source)

Global warming isn't a prediction. It is happening.

- James Hansen (Source)

We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.

- James Hansen (Source)

What makes tar sands particularly odious is that the energy you get out in the end, per unit carbon dioxide, is poor. It's equivalent to burning coal in your automobile.

- James Hansen (Source)

What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.

- James Hansen (Source)

If humanity wishes to preserve a planet similar to that on which civilisation developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO₂ will need to be reduced from its current 385 ppm [parts per million] to at most 350 ppm... If the present overshoot of this target CO₂ is not brief, there is a possibility of seeding irreversible catastrophic effects.

- James Hansen (Source)

Coal is the single greatest threat to civilization and all life on our planet.

- James Hansen (Source)

NASA Scientist James Hansen arrested

Further Reading (Sources)

  1. Climate Change
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