Q. How does a sloth, being such a lethargic animal, survive in the wild where norm is survival of the fittest? A. The sloth’s extreme sluggishness works to its advantage. This primitive mammal which sleeps 18 hours out of every 24, expends so little...

Q. Often a white powdery coating is seen on green as well as black grapes. Which substance is it? Is it pesticide? A. It is true that in some regions maximum quantity of pesticides are sprayed on grapes. However, white powdery coating on grapes is not...

Q. Are the words tortoise and turtle names of the same creature? Or are they different species? A. Those which live on land are called tortoise (photo 1) and those which live in sea, rivers or ponds are called turtle (photo 2) by the zoologists. Both...

Q. Was Tenzing Norgay the first to reach the summit of Mount Everest? Or was it Sir Edmund Hillary? A. Despite what the history books say as well as the modest Tenzing himself said it’s widely believed that Sir Edmund Hillary was beaten to the top...

Q. Why do we have wisdom teeth? Why are they sometimes painful? A. Humans have 20 primary and 32 permanent teeth. The primary teeth’s shedding begins about age 5 or 6 and is finished by the age of 13. Wisdom teeth grow after adult dentition has...