> adult diapers

shanhai, china -- don't leave home without it. thousands of chinese are taking that advice and packing adult diapers for their lunar new year holiday trips.

trains are so crowded, travelers cram every inch, including the usually stinking bathrooms.

that means people who have to go while they're on the go can't. so, they're stocking up on diapers. sales of diapers have soared ahead of the holiday.

this year the lunar new year celebration begins jan. 29. chinese officials estimate that trains will carry about 4 million people during the 40-day holiday period.

the problem arises from the need to sell twice as many tickets as there are train seats to accommodate the crush of travelers. those without seats must find some place -- any place -- to put themselves, including in overhead racks, between cars and in toilets.

just purchasing a ticket can mean lining up for hours.