Prof. Carlo Rubbia is an Italian physicist and academic, winner of the Nobel Prize for Physics in 1984.
′′ I am someone who has worked at least a quarter of a century on the issue of energy in various aspects and therefore I know things very clearly.
I would like to express some concepts quickly, also because the timing is short.
The first observation is that Earth's climate has always changed. Today we think (in a way, probably falsely) that if we keep CO2 (Carbon Anhydride) under control, the Earth's climate will remain unchanged. This is absolutely not true.
I would like to remind you that during the last million years Earth was dominated by periods of glaciation where the average temperature was less than 10 degrees, except very short periods, where there was the temperature that is today. The last one was 10.000 years ago when the change started with agriculture, development and so on, which is the basis of all our civilization today.
In the last 2.000 years, for example, Earth's temperature has changed profoundly. In the time of Romans, Hannibal crossed the Alps with elephants to come to Italy. We couldn't come today, because the temperature of the earth is lower than what it was in Romans times. So today elephants couldn't cross the area where they went then.
There was a period in the Middle Ages when a small glaciation occurred. Then, around the year 1000 there was a temperature increase similar to Romans times. Let's remember that in the time of Romans the temperature was higher than today. Then there was a mini-glaciation, during the period of 1500-1600. For example, the Vikings experienced massive survival problems due to this mini-glaciation, which developed with substantial temperature changes.
If we stay in the last 100 years, there have been significant climate changes, which happened well before the anthropogenic effect, greenhouse effect and so on. For example, in the s there was a substantial change.
The presence of man probably brought about further changes. Let's not forget that when I was born, Earth's population was 3,7 times less than today. Primary energy consumption increased 11 times in my life.
Regarding the behavior of the planet, this has had very strange and contradictory effects.
I would like to remind you for example that from 2000 to 2014, Earth's temperature has not risen: it has decreased by 0,2 degrees and we have not observed any sizeable climate change in the last 15 years. This is something you all need to realize, because we are not facing a temperature explosion: the temperature has risen until 2000: since then we have remained constant, actually we are down 0,2 degrees.
Prof. Carlo STEALS:
′′ I look at the facts. The fact is that Earth's average temperature, in the last 15 years, has not risen but decreased" END OF QUOTE