Sunderlal Bahuguna, veteran environmentalist and pioneer of the Chipko movement, breathed his last on Friday at the AIIMS in Rishikesh after battling Covid-19. He was 94. Bahuguna, who led protests against the felling of trees in the Garhwal Himalayas and opposed the construction of the Tehri Dam, was admitted to AIIMS in Rishikesh on May 8 for treatment of Covid-19. His