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One of the computer models for a four degree temperature rise would give rise to a 10 degree temperature rise in Africa. And bear in mind also that in the depth of an ice age the mean temperature drop compared to the present was five degrees.

Martin Rees

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Martin Rees
Age: 82
Born: 1942
Born: June 23
Astronomer
Astrophysicist
Cosmologist
Physicist
Politician
University Teacher
Jórvík
Baron Rees of Ludlow
Martin John Rees
Baron Rees of Ludlow
OM
FRS
FREng
FMedSci
Lord Martin Rees
Professor Martin John Rees
Baron Rees of Ludlow
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Degrees
Ice
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More quotes by Martin Rees

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Experiments that crash atoms together could start a chain reaction that erodes everything on Earth.
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Science is a part of culture. Indeed, it is the only truly global culture because protons and proteins are the same all over the world, and it's the one culture we can all share.
Martin Rees
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I hope that by 2050 the entire solar system will have been explored and mapped by flotillas of tiny robotic craft.
Martin Rees
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In future, children won't perceive the stars as mere twinkling points of light: they'll learn that each is a 'Sun', orbited by planets fully as interesting as those in our Solar system.
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Crucial to science education is hands-on involvement: showing, not just telling real experiments and field trips and not just virtual reality.
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I think all countries need to aim to cut the CO2 emissions per person, taking account of externalities like imports and exports.
Martin Rees
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Some claim that computers will, by 2050, achieve human capabilities. Of course, in some respects they already have.
Martin Rees
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The U.S., France, Germany and Canada have all responded to the financial crisis by boosting rather than cutting their science funding. The U.K. has not.
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In the beginning there were only probabilities. The universe could only come into existence if someone observed it. It does not matter that the observers turned up several billion years later. The universe exists because we are aware of it.
Martin Rees
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If we ever establish contact with intelligent aliens living on a planet around a distant star ... They would be made of similar atoms to us. They could trace their origins back to the big bang 13.7 billion years ago, and they would share with us the universe's future. However, the surest common culture would be mathematics.
Martin Rees
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The important point there is that when people talk about a mean temperature rise of say two, three or four degrees that's a sort of global average which really is a signature of large scale change in climatic patterns.
Martin Rees
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In the case of climate change, the threat is long-term and diffuse and requires broad international action for the benefit of people decades in the future. And in politics, the urgent always trumps the important, and that is what makes it a very difficult and challenging issue.
Martin Rees
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An insect is more complex than a star..and is a far greater challenge to understand.
Martin Rees
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Cosmology does, I think, affect the way that we perceive humanity's role in nature. One thing we've learnt from astronomy is that the future lying ahead is more prolonged than the past. Even our sun is less than halfway through its life.
Martin Rees
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I have no religious belief myself, but I don't think we should fight about it. In particular, I think that we should not rubbish moderate religious leaders like the Archbishop of Canterbury because I think we all agree that extreme fundamentalism is a threat, and we need all the allies we can muster against it.
Martin Rees
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God invented space so that not everything had to happen in Princeton.
Martin Rees
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The carbon dioxide concentration in the atmosphere is measured. It's uncontroversial. It's going up. We know that has a tendency to warm the atmosphere and we should be worried about that.
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I suspect there could be life and intelligence out there in forms that we can't conceive. And there could, of course, be forms of intelligence beyond human capacity-beyond as much as we are beyond a chimpanzee.
Martin Rees
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Indeed, our everyday world presents intellectual challenges just as daunting as those of the cosmos and the quantum, and that is where 99 per cent of scientists focus their efforts. Even the smallest insect, with its intricate structure, is far more complex than either an atom or a star.
Martin Rees
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It's better to read first rate science fiction than second rate science-it's a lot more fun, and no more likely to be wrong.
Martin Rees