But preparing food for consumption in the air presents unique problems -- not least that passengers' taste buds don't function as well at altitude.

CNN: Frankfurt Airport in numbers

That's not fair... and the IMF doesn't function properly as a result.

BBC: Obama hails 'tough regulations'

Fish oil "seems to be healthy in general, and maybe for other things it's helpful, but it doesn't benefit cognitive function in a person with Alzheimer's, " says Ferris, who was not involved in the study.

CNN: Fish oil ingredient doesn't slow Alzheimer's