It is a hot and dry day at the huge campus of IIT Gandhinagar in Gujarat. The temperature is so high that it is becoming difficult to walk from one block to another. In the hot weather, I come across a group of students who are unperturbed by the heat and are judiciously working inside an AC hall. Their aim is to invent something useful. All of them are young inventors from different IITs, NITs and BITs from across the country.