Okay, it's official: Obama can give a bad speech | Michael Tomasky  - guardian.co.uk

For those of you who've been waiting for me to confess this, well, today, you win: Obama just gave an awfully ho-hum speech on climate change to the UN.

He looked tired, but I'd venture two other reasons for it.

First, he didn't put on a hard sell because he knows he doesn't have much to sell. As I wrote on Monday, it seems pretty unlikely right now that the Senate will pass cap-and-trade. Not this year, not next year. If healthcare reform dies, forget it
...
Second, his mind is clearly on healthcare.

President Obama urges action on climate change - Josh Gerstein - POLITICO.com

Speaking in advance of Obama’s address, Greenpeace spokesman Kert Davies said administration officials were tallying up a variety of less important actions on climate change to divert attention from the inaction on cap-and-trade.