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The ebb and flow of estrogen levels in a women's monthly cycle may have a protective effect on the eye's retina, ophthalmologists say. And that fluctuation could explain a possible connection between birth control pills and glaucoma. Women who have taken the pill a long time may want to consider glaucoma screening.

It's a big week for the video game industry; Sony just released the PlayStation 4 and Microsoft will release its new Xbox games console Friday. All Tech Considered is kicking off the week with a look at just how big the industry has become and who plays these days. Robert Siegel talks with industry expert John Davison. He's currently general manager of content and publishing for video game company Red Robot Labs.

Most politicians recognize the importance of the Latino vote, but John F. Kennedy might have been the first presidential candidate to actively court it. Viva Kennedy clubs started by former Mexican-American veterans were an important factor in Kennedy's 1960 victory.

Not counting a 16-year break the British science-fiction TV series took around the 1990s, Doctor Who is celebrating its 50th anniversary on Saturday. There's a special in 3D that's going to be simulcast in 75 countries, and the BBC has made a movie about the history of Doctor Who.

Golden eagles are protected by federal law. Still, this is the first prosecution of its kind, despite the fact that dozens of eagles are killed by wind energy facilities each year.

Adam Minter looks at the business of recycling what developed nations throw away, critic John Powers praises two films of excess, and Keegan-Michael Key and Jordan Peele explain how their biracial roots bestow special comedic "power."

After one of his top aides was detained by the government, opposition leader Henrique Capriles dared them to imprison him. Nicolás Maduro, who won the presidential election against Capriles, was recently given the power to rule by decree.

Just who is Ross Ulbricht? The man who went by "Dread Pirate Roberts" and ran a vast black market bazaar was a well-educated 29-year-old with libertarian leanings. He made a StoryCorps recording last year saying he wanted to make a "positive impact on humanity."

Why is kissing found in practically every culture? A kiss can convey passion, love and, perhaps subconsciously, a veritable catalog of information about the worthiness of a potential mate. So much for romance.

Andrew Solomon's book is about families with children who are profoundly different or likely to be stigmatized. "We all love flawed children," says Solomon, "and the general assumption that these more extreme flaws make ... children somehow unlovable — it wasn't true of most of my experience."