AP PhotoBLACKOUTBlackout in Northern India (Photos)Over 680 million people are without power in India after a massive grid failure in the eastern and northern regions, including the populous city of New Delhi.07.31.12 9:00 PM ETAP PhotoRajesh Kumar Singh / AP PhotoAs many as 680 million people lost power on Tuesday as India's northern and eastern electric grids failed for the second consecutive day. Above, stranded passengers at a New Delhi train station waited for power to be restored. Rajesh Kumar Singh / AP PhotoStreets were clogged on Tuesday as traffic lights went out across New Delhi. AP PhotoA traffic jam on Delhi-Gurgaon road on the outskirts of New Delhi on Tuesday. Tsering Topgyal / AP PhotoA shopkeeper fixed a generator in front of his store on Tuesday. Altaf Qadri / AP PhotoA passenger sat in a disabled train in New Delhi on Monday. The power grid failed on two consecutive days. Altaf Qadri / AP PhotoTrain service in and around New Delhi was brought to a halt when the region's power grid failed early Monday morning. AP PhotoCommuters waited for a metro train in New Delhi on Monday. Bikas Das / AP PhotoAn Indian barber cut a customer's hair by candlelight at his shop in Kolkata on Tuesday. Bikas Das / AP PhotoDarkened buildings in Kolkata on Tuesday.