Can you get triple or quadruple rainbows?
I have seen many double rainbows, but do triple or quadruple ones exist? If so, where is the best place to see them, and what is the maximum number that could exist?
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Why hasn鈥檛 evolution given us eyes in the back of our head (continued)?
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This week鈥檚 new questions
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Do any species of bird hiccup? If so, why would they do this?
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How much of the movement of clouds is due to Earth鈥檚 rotation?
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Why do duvet covers swallow other laundry? (continued)
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This week鈥檚 new questions
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Are birds that walk more advanced than those that hop?
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Do the different causes of headaches create pain in different places?
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Are tandems really more efficient than regular bikes (continued)?
A triplet bike has less resistance per person, so is more efficient than a tandem, which is more efficient than a regular bike. Does this trend hold however long the bike?
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This week鈥檚 new questions
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Why do cabbages exist when their shape prevents photosynthesis?
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Why does light reflect in a mirror but go straight through glass?
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This week鈥檚 new questions
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