Blair has no credibility left to do anything useful. He is running around like a headless chicken to leave some kind of legacy. But his enduring legacy will be death and distruction to millions of people.

sinna mani, london, uk

How much do you think he will make from this latest crusade? Who elected him to be speaker on climate change he his just another quango and unaccountable.

steve tea, manchester, cheshire

If we accept that human activity is the cause of climate change, why is population growth so often ignored?

World Population:

1950 2.5 Billion

2000 6 Billion

2050 Estimated population 9 Billion

With some major religions being opposed to contraception perhaps there is no solution. As a recent convert to the Catholic Church it would be interesting to hear the opinion of Tony Blair. But I suspect that even Mr Blair might back away from this difficult and highly contentious problem.

Les Wortley, Manchester, Lancashire

But would the planet bother saving him ?

Ian Payne, WALSALL,

firstly wheres the world peace exactly ?
Secondly does this mean any changes in the climate and we can blame blair ?

mr, london, uk

If we don't address climate change, the comments below will be utterly irrelevant.

Peter, London,

Well it's a more realistic cut than the Lib Dems carbon free by 2050.

Meera, Reading, UK

Blair to save us. How ridiculous. The only thing he do for me is to go away, a long way away, and never be heard of again.

CJW, Shawbury, England

Blair's finally caught up with everyone else has he. Pity he never followed his own plans through whilst in Downing Street.

Marie-Claire Oliver, Bath, United Kingdom

Taking into account the mess he has made of Britain - God help the planet.

Emma, Southampton,

His track record on climate change and sustainability was just the usual mix of bluster and failed initiatives. Surely being a poor amateur guitarist and a world-class sleaze artist do not qualify a discredited politician for such a high-profile well-paid post ? There must be many others who actually have relevant qualifications and experience. Why can we not have the right person for the job - or are we running fat-cat pension schemes for people who never made it at home.

Sean Shalor, Coventry, Uk

This is hilarious.

I especially like the bit about how it's only going to take Tony 10 days a month to achieve peace in the Middle East, which is why he can also get on with sorting out climate change.

The man is absolutely bonkers.

Bob, Liverpool, UK

"After world peace, Tony Blair's next mission is to save the planet"

Yeah, and the Iraqis are making a donation to buy him a Superman Cape.

Mohammed, London, UK

Yes, darn those green house gases that provide us with a temperate climate and stop all that nice warm air that keeps us alive in the atmosphere. Will he tackle the worst offender, water vapour, which accounts for 95% of green house gas. Ban clouds. Oh, and that other chap, what’s his name, oh yes, the sun! Let's use science and not politics for once.

Simon, Japan, osaka, japan

The question is

To gain such a standing with other countries, what has he done ?

The Answer is

Sold Britain down the river and destroyed it.

Dave, Lincoln,

Groan. Here we go again. Another one starts an endless campaign of flights and freebies around the world telling everyone else not to use planes.

Kyoto ends in 2012. Hmm, what else is happening that year to reduce emissions? Oh yes, the London Olympics! How many millions of tonnes of carbon will that produce just so a bunch of drug-fuelled unemployables can fly in from all over the planet to run around in circles, hit each other, and throw things about for three weeks? Very useful!

Kevin Browne, Reading, Berkshire, England

He ran when he messed up Britain too much, his next target.... the world, and meddling with nature.

If we are going to look at climate controls/changes, we need to look at ALL of the scientific evidence, not just the studies that lead to increased taxes.

Of course that will never happen with a smug dictator like Blair involved.

Steve Aynsley, Blyth, Northumberland