11 / 79

FILE - In this Oct. 31, 2011 file photo, Thai residents carry their belongings along floods as they move to higher ground at Bangkok's Don Muang district, Thailand. Freakish weather, from this weekends October snowstorm to the long-lasting drought in the US Southwest, is striking more often. And global warming should make future weather even weirder, a special international report says. (AP Photo/Aaron Favila, File)

FILE - In this Oct. 31, 2011 file photo, Thai residents carry their belongings along floods as they move to higher ground at Bangkok's Don Muang district, Thailand. Freakish weather, from this weekends October snowstorm to the long-lasting drought in the US Southwest, is striking more often. And global warming should make future weather even weirder, a special international report says. (AP Photo/Aaron Favila, File)

Floods threaten Bangkok trains

Advancing pools of filthy water threatened the Thai capital's subway system Monday and surrounded the emergency headquarters set up to deal with flooding that has claimed more than 500 lives nationwide.