October 31, 2013 02:11 am | Updated 02:11 am IST
This week’s questions
Why do we humans laugh and why is laughter uniquely human?
Sharique Imran, Patna, Bihar
Why are sea organisms living deep in the sea not affected by the high water pressure?
K.Akhil, Hyderabad
Why does hair on our head keep growing but hair on eyebrows and eyelashes grow to a certain length and then stop?
Abhishek Goyal, Sunam, Punjab
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