December 03, 2014 11:45 pm | Updated April 07, 2016 02:33 am IST
Why is the ozone hole concentrated over Antarctica?
Ananthu Krishna, Kochi
Crocodile is stronger in water than on land. Why?
Mr. A. Pichai, Thanjavur, Tamil Nadu
Why does milk boil over after heating but water does not?
Naveen Thakur
Why does our left brain control the right part of our body and our right brain control the left part of our body?
Varshini, Hosur, Tamil Nadu
What is the science behind the emergency braking system in trains?
C.Mathangi, Chennai
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