By Samarth Pathak Move over pollution in the forms of air, water and land. The latest menace reported to be affecting the environment is light pollution. Besides causing numerous health problems, it is also a major hindrance in the activities of night sky gazers. Delhi is now waking up to the harsh reality that visibility of celestial bodies in the city is reducing at an alarming rate due to luminous obstructions. Light pollution, which is a by-product of rapid industrialisation, poses a serious threat to urban people.