Factbox - U.N. climate talks seek to avoid hype in Cancun

(Reuters) - A U.N. climate meeting in the Mexican beach resort of Cancun is taking a low-key approach to unblocking U.N. climate talks after last year's much hyped Copenhagen summit ended acrimoniously.

Following is a comparison of the numbers of delegates at the two meetings, and of the costs of the U.N. climate talks in 2009 and 2010. The Cancun gathering of nearly 200 countries runs from Monday through December 10.

The Copenhagen summit was billed as the world's best chance to agree on a global climate deal to succeed the Kyoto Protocol -- the present round ends in 2012 -- but ended with a non-binding agreement rejected by a clutch of countries on a bad-tempered final day.

The Cancun conference aims to agree on funding for, and approaches to, preserving the rainforest and preparing for elevated global temperatures. It could also formalize existing targets to curb greenhouse gas emissions.

DELEGATES AND OBSERVERS

* Cancun, 2010: Mexican authorities expect up to 22,000 people, including 9,000 official delegates plus journalists, environmentalists and others

* Copenhagen, 2009: more than 45,000 delegates and observers

COST

* The total cost of the U.N. climate talks, not including bills for many of the delegates, was about $238 million (153 million pounds) in 2009 and $82 million in 2010.

* The Cancun conference is expected to cost the Mexican government about 841 million Mexican pesos (43 million pounds).

* The Danish finance ministry said the 2009 summit in Copenhagen cost it about 1.2 billion Danish Krone (137 million pounds).

* The United Nations climate change agency estimates that the cost of smaller meetings run about $5 million each. It organized five such meetings in 2009 and three in 2010.

(Reporting by Gerard Wynn, Editing by Stacey Joyce)