A question from Taiwan: Chung Li wants to know why his face turns red when he drinks alcohol.

VOA: special.2009.05.13

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

Mister Weindruch says researchers do not know why reducing calories increases the length of life.

VOA: special.2009.09.01

They do not know why all these things were found together in one place.

VOA: special.2010.08.03

Scientists do not know why women are more at risk than men.

VOA: special.2009.04.14

Researchers do not know why happiness increases as people get older.

VOA: special.2010.08.03

I don't know why I do it. I just do it."

VOA: special.2009.07.04

Scientists do not know why women are more at risk.

VOA: special.2010.06.15

Mrs.Luce demanded to know why God had taken her daughter.

VOA: special.2010.08.08

I do not know why I should fear death.

VOA: special.2010.07.10

Doctors do not yet know why this is true.

VOA: special.2010.06.15

If you get a chance to see a red sunset over the Sangre de Cristo Mountains of New Mexico, you will know why that southwestern state is called The Land of Enchantment.

VOA: special.2009.08.16

But in a recent BBC poll, two-fifths of those questioned said they did not even know why British forces are in Afghanistan.

VOA: standard.2009.11.10

What, you think I regret saving you? I can see that you do.I just... I don't know why.

VOA: standard.other