 NDTV.com | Vidya Balan Spends Earth Hour In Delhi NDTV.com PTI Vidya Balan enjoyed her hour of darkness during the Earth Hour in Delhi as the city switched off it's lights, joining the biggest global movement to preserve energy and the environment. The 33-year-old actress who is the first female brand ... Power firm urges Delhi residents to observe Earth Hour Sheila Dikshit asks Delhiites to observe Earth Hour Earth Song |