/* ]]> */
Jul 182013
 

Birds, unlike humans, need gravity to swallow. Humans can swallow even while hanging upside down.

Hold your mouse over for the answer.

NASA was considering sending canaries into space to study them under zero gravity. The project was scrapped when someone realized that in spite of having sufficient water supplies, they could die of dehydration within a few hours.

Why?

 

 

 Leave a Reply

(required)

(required)