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A small plane on a daring winter evacuation mission from the South Pole landed safely Wednesday night at Punta Arenas, Chile.

Demanding action on gun control, about 30 Democratic members of the United States House of Representatives are staging a sit-in.

"Lawmakers are grouped in the well of the chamber, in front of the speaker's dais and in chairs in the front row," NPR's Sue Davis reports. "Some members are literally sitting on the floor of the House."

Why do onions make us cry?

Many a poet has pondered. Is it because their beautiful, multilayered complexity moves us to weep? Are we mourning the majestic bulb as we cut it up and consume it?

Or are these tears induced by the tragic tedium of chopping, chopping, chopping?

Yes, yes. All of the above.

The Diablo Canyon Nuclear Power Plant will be shut down by 2025. The plan was announced today by the power utility operating the plant, along with labor and environmental groups.

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