Latest News Wires World's biggest blackout: 620 million people without power in India

World's biggest blackout: More than half of India's population was without electricity Tuesday. The blackout hit  20 of India's 28 states as the power failure cascaded across the grids.

(AP Photo/Tsering Topgyal)

 India's energy crisis cascaded over half the country Tuesday when three of its regional grids collapsed, leaving 620 million people without government-supplied electricity for several hours in, by far, the world's biggest-ever blackout.