By Karen Elizondo
At least 600 million people were affected Tuesday in the worst blackout in India's history, reported the Washington Post.
A power grid failure on Monday that left 350 million people out of power grew to 600 million when the second and larger grid failure occurred Tuesday, CNN reported.
The blackout has shutdown trains, air conditioners, and stoplights, causing traffic to back up into a "gridlock on many streets of the capital," the Washington Post reported.
Airports and hospitals have been forced to run on backup power, CNN reported.
Power is largly being restored, CNN reported.