This cartoon by Paul Thomas from the Daily Express cleverly links the Tiger Woods crash scandal/affair to the Copenhagen climate change summit.
COMMENTARY
The joke is that the delegates are discussing global warming and one of them says that there's been a dramatic drop in temperature at Tiger Woods's house. This is a metaphorical reference to the domestic atmosphere as his wife learns of her husband's growing list of alleged affairs. And, of course, there's the humour in the idea that even at the Climate Change Summit, Tiger Woods is on the agenda.
PUNCTUATION NOTE
Should it be "Tiger Woods' house" or "Tiger Woods's house"? Opinions differ. According to Jane Straus on GrammarBook.com: "Although names ending in s or an s sound are not required to have the second s added in possessive form, it is preferred." The Guardian Style Guide is more categorical: "Words ending in -s use -s's (Dickens's house)." The Economist Style Guide agrees: "Use the normal possessive ending 's after singular words or names that end in s: boss's, caucus's, Delors's, St James's, Jones's, Shanks's." However, according to Wikipedia, "... some modern writers omit the extra s in all cases, and Chicago Manual of Style allows this as an 'alternative practice'". You pays your money and you takes your choice.