By Angela Moon NEW YORK (Reuters) - With the broad S&P 500 Index gliding once again into uncharted territory and posting four straight weeks of gains, the talk of Wall Street's rally inevitably hitting a ceiling is starting to get old. Concerns about a technical correction have been a hot topic for weeks, especially as the rally accelerated in May - the S&P 500 is up 4.4 percent so far this month and up nearly 17 percent for the year. But as the three major U.S. stock indexes inch higher and higher to set record after record, many analysts are shrugging off the pullback worries. ...

By Ann Saphir and Jonathan Spicer (Reuters) - The beginning of the end of the Federal Reserve's massive bond-buying program might come sooner than many investors think if recent gains in the U.S. labor market do not prove fleeting. Much will depend on how economic data, which has given mixed signals for growth prospects, develops over the next few months. Reports on job growth in particular will go a long way in helping Fed officials determine whether the time is right to trim the pace of their $85 billion in monthly purchases. The marked improvement in the labor market since the U.S. ...

By Allison Martell (Reuters) - Hope is fading for a global deal to regulate the airline industry's greenhouse gas emissions ahead of a fall deadline, even though failure could push the industry back to the brink of a trade war over the European Union's emissions trading system. Last November the EU suspended its controversial scheme to force all airlines to buy carbon credits for any flight arriving in or departing from European airspace. The scheme had pitted European states against China, the United States, India and others, who said it violated their sovereignty. ...

By Sonya Dowsett MADRID (Reuters) - Many duped savers at Spanish lender Bankia are shunning a state-supervised compensation scheme in favor of expensive lawsuits, prolonging a mis-selling scandal and complicating efforts to restore faith in the banking system. The disputes over mis-selling at Bankia and other nationalized banks have created a major headache for the government as it tries to take the next step in their rescue, imposing large losses on holders of junior debt. ...