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Scientists and growers are in a bitter fight against citrus greening, a disease that has devastated Florida's orange and grapefruit crops. They fear that unless scientists find a cure for greening soon, it's just a matter of time before economic realities and the disease force growers out of business.

Over the past year, a roaring debate has erupted among physicists about what exactly would happen if you fell into a black hole. Would it be "spaghettification," or a quantum firestorm and oblivion where space ceases to exist? The answer has big implications for fundamental physics.

Only a rare few people have the ability to remember everything that happened in their lives. But that gift can seem like a curse, they say, keeping them marooned in the past and unable to enjoy the present. Forgetting, it seems, can be a good thing.

The government says the former vice president is mobilizing an army of youth to seize key cities in the newly independent nation. The United Nations is not sure it can protect the thousands of people staying at its compound who have been displaced by recent ethnic fighting.

Beyond drastically curtailing a safety-net for jobless workers, allowing the benefits to expire sets up a major political fight for the coming new year.

Is that a cross? A ship with a figurehead? It's only human to wonder what the future will hold, especially on the threshold of a new year. In one German tradition, fortune-seekers drop molten lead into cold water — then it's anyone's guess what the strange shapes portend.

The Conversation Project is encouraging families to discuss their end-of-life preferences before it's too late. Founder Ellen Goodman speaks with NPR's Linda Wertheimer about helping people initiate these conversations, and why they are so important.

David Edelstein says it was a "miraculous year" for movies. David Bianculli says two Netflix shows this year changed the game. Maureen Corrigan says it's just a fluke that 9 of the 11 titles she picked were written by female authors. And Ken Tucker picks his 10 favorite albums.

Global warming is pushing species like the polar bear to the brink of extinction. It's not a typical conservation problem, so one government biologist discovered the best way he could help save the great white bears was to quit his job.

Fake stories on the Internet are not new, but their nature is changing. They seem to be more calculated, more elaborate and have a deeper intent to elicit a swell of emotion. Grantland writer Tess Lynch explains why she thinks 2013 was the year of the hoax — and which story even fooled her.