From PRI, Public Radio International and KCRW Santa Monica, this is To the Point.

A new campaign starts, but an old one doesn't end. How long will Hillary keep running?

I'm Sarah Terry sitting in for Warren Alney, and this is To the Point from Public Radio International, a daily look at the issues Americans care about most.

The presidential general election campaign kicked off last night as Barack Obama claimed an historic victory as the Democratic Party nominee.

Republican John McCain quickly focused his energies against his opponent, but Hillary Clinton did not concede last night. When will she acknowledge Obama's win? Does she want the vice presidential slot on the Democratic ticket? What will it take to unite Democrats? On reporter's notebook, what to do about global warming? The debate heats up in the Senate.

First, here's the news. Thank you. Thank you. Thank you. Thank you. Thank you. Thank you. Support for To the Point comes from subscribers of KCRW Santa Monica and from the Public Radio International Program Fund, whose contributors include the Ford Foundation and the John D. and Catherine T. MacArthur Foundation.

I'm Sarah Terry, sitting in for Warren Olney, back with To the Point from PRI. We'll be talking about

the historic primary season and what's next for Hillary Clinton. Barack Obama and John McCain

have already begun focusing on each other in the race for the White House,

but what role will Clinton play? Would the so-called dream ticket of Obama Clinton be a winner

or a nightmare? What do the Republicans gain from ongoing divisions among Democrats?

On reporter's notebook, in the Senate, Republicans are working hard to defeat a proposed climate change bill.

No one's arguing anymore about the fact of global warming.

The debate is about how to deal with it.

First, this news update.

United Airlines, the world's second largest carrier, today announced cost-cutting measures due to rising oil prices.

United said it will shut Ted, its

low fare airline, ground 70 planes, and cut as many as 1,100 jobs. Joining me is Julie Johnson,

airline and aerospace reporter for the Chicago Tribune. Thanks for joining us. Oh, hi, Sarah.

Hi. United's friendly skies aren't looking so friendly right now.

I don't think the skies are friendly for anybody right now. We've had a wave of bankruptcies in this

industry and some bigger, you know, trees are going to fall in the months ahead. And I think,

...