Seeing his mother struggle with home chores, Putsala Harshith made a small robot to clean rooms. That was the start of many other inventions - one of which is now being showcased at Expo 2020 Visitor Centre in Dubai. Nine-year-old Harshith is a Grade 4 student of Bright Riders School Abu Dhabi. His project, called 'Robotic waste segregation to organic composting', was chosen to be part of Expo 2020 Young ...