Brain Teasers
NASA Canaries
Science
Science brain teasers require understanding of the physical or biological world and the laws that govern it.Science
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?
Answer
Birds, unlike humans, need gravity to swallow. Humans can swallow even while hanging upside down.Hide Answer Show Answer
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