An Indian Paramilitary officer gives a command to his contingent during rehearsals for India's Republic Day parade, amidst morning fog in New Delhi, India, Wednesday, Jan. 4, 2012. Dense fog enveloped many parts north India Wednesday, affecting normal life. Though India is famous for its brutally hot summers, temperatures fall sharply for a few weeks in December and January. Poor people, particularly those living on the streets, are the worst affected.