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Do we know if there is a “threshold of danger”?

Are we going towards a climate shock?

Newspaper articles

Could we all eat organic?

They are ecologists without necessarily knowing it…

Should we encourage the growth of air trafic?

How fast can we decrease our CO2 emissions?

Predicting the future

Should we replace nuclear power plants by gas-fired power plants?

Did coal production already peak somewhere?

Gaïa: a new look at life on Earth – James Lovelock – 1979

Democracy in America – Alexis De Tocqueville – 1835

Who should reduce first?

Acting collectively

Will the “hole in the ozone layer” increase?

Why is it said that the earth is warming up?

Physical aspects