Amid a sweeping crackdown on dissent in Egypt, security forces have forcibly disappeared hundreds of people since the beginning of 2015, according to a new report from Amnesty International.

It's an "unprecedented spike," the group says, with an average of three or four people disappeared every day.

The Republican Party, as it prepares for its convention next week has checked off item No. 1 on its housekeeping list — drafting a party platform. The document reflects the conservative views of its authors, many of whom are party activists. So don't look for any concessions to changing views among the broader public on key social issues.

Many public figures who took to Twitter and Facebook following the murder of five police officers in Dallas have faced public blowback and, in some cases, found their employers less than forgiving about inflammatory and sometimes hateful online comments.

As Venezuela unravels — with shortages of food and medicine, as well as runaway inflation — President Nicolas Maduro is increasingly unpopular. But he's still holding onto power.

"The truth in Venezuela is there is real hunger. We are hungry," says a man who has invited me into his house in the northwestern city of Maracaibo, but doesn't want his name used for fear of reprisals by the government.

The wiry man paces angrily as he speaks. It wasn't always this way, he says, showing how loose his pants are now.

Ask a typical teenage girl about the latest slang and girl crushes and you might get answers like "spilling the tea" and Taylor Swift. But at the Girl Up Leadership Summit in Washington, D.C., the answers were "intersectional feminism" — the idea that there's no one-size-fits-all definition of feminism — and U.N. climate chief Christiana Figueres.

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Arizona Hispanics Poised To Swing State Blue

2 hours ago
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Editor's note: This report contains accounts of rape, violence and other disturbing events.

Sex trafficking wasn't a major concern in the early 1980s, when Beth Jacobs was a teenager. If you were a prostitute, the thinking went, it was your choice.

Jacobs thought that too, right up until she came to, on the lot of a dark truck stop one night. She says she had asked a friendly-seeming man for a ride home that afternoon.

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A Beautiful Notion: That Caterpillars Killed Off The Dinosaurs

Jul 1, 2013
Originally published on July 2, 2013 11:52 am

For the last hundred years, scientists have been wondering why the dinosaurs disappeared so quickly. Was there one key reason, or several?

Volcanologists pointed to volcanoes. Climatologists suggested global warming, or possibly, global cooling. Ocean experts thought the oceans receded. Some biologists blamed egg snatching mammals. Some botanists suggested toxic plants. In his new book on everything dinosaurish, My Beloved Brontosaurus, Brian Switek lists a "slew of weird ideas" proposed by various scientists 50, 60 years ago, before our current favorite, the asteroid theory, gained favor.

Some supported the dinosaurs-developed-cataracts theory, some the "slipped disc" theory. Others thought dinosaurs got zapped by cosmic radiation. Still others felt as dinosaurs got bigger (while their brains stayed small), they became too stupid to compete with smaller animals. Nobody knew so everybody guessed.

"There had to be some reason the dinosaurs disappeared, and the floor was open to just about anyone who had even the slightly inkling on the subject," writes Brian.

The Caterpillar Theory

Of all the theories he looked at, Brian's favorite is so wonderful to think about, so deeply odd (even if it's almost certainly wrong), I want to retell it. It comes from a California scientist, Stanley Flanders, who made his living as an entomologist, an insect man, which is perhaps why, in 1962, he wrote a paper called, "Did the Caterpillar Exterminate the Giant Reptile?" Dr. Flanders proposed that the great dinosaurs were eliminated by a giant influx of moths and butterflies.

I'm not making this up.

Here's his argument. Flanders reasoned that "the inherent weakness of the reptile was an extraordinary need for an abundance of plant material."

Can't argue with that. Big vegetable eaters — the hadrosaurs and sauropods — needed to eat leaves by the bushel. Bushels upon bushels. So if anybody else got to those leaves ahead of them, that was dangerous.

Caterpillars, of course, eat leaves too. They are much, much, much smaller than dinosaurs, so you wouldn't think of them being a threat, unless ... and here's where Dr. Flanders imagined his catastrophic possibility.

Suppose, he said, that somewhere around the time the dinosaurs disappeared, a new insect happened on the scene. These little guys were the first representatives of the Lepidoptera, animals that today we call moths and butterflies. When they lay eggs, their babies, the caterpillars, eat prodigious amounts of leaf. If there were birds around, or caterpillar loving parasites, lots of those caterpillars would have been eaten or destroyed, killed by their natural enemies.

But what if, asked Dr. Flanders, the first baby moths and butterflies were so new, they didn't yet have enemies?

Then, because they could have had so many babies much more quickly than giant dinosaurs, they could not only multiply enormously, they might have achieved a population large enough to out-eat the dinosaurs. He'd seen such a thing happen in Australia when a new caterpillar, "imported from Argentina in 1925, destroyed within 6 years approximately 50 million acres of the prickly pear." It had no Australian enemies.

Sixty-five million years ago, those moths and butterflies would eventually become dinner for even newer animals, but for a little while, wrote Dr. Flanders, he could imagine the dinosaurs getting hungrier and hungrier as caterpillars made off with their food until, eventually, a great die-off began.

"Thus," Flanders concluded, "the giant reptiles which had survived during eons characterized by great changes in climate, continental uplifts, and different diets, may have been exterminated by the lowly caterpillar."

Thinking about this, Brian Switek imagines the final scene: On the forest floor you see the dead hulks of hadrosaurii, sauropods, the horned dinosaurs wasting away while all about them in growing profusion is a cloud of moths and butterflies getting thicker and thicker, a haze of tiny wings, as billions of moths maybe showing first traces of blues, greens, pinks, flutter about. ... Kind of beautiful, no?

Alas, Dr. Flanders' theory never attracted much scientific support. There is no evidence in the fossil record of any epidemic of caterpillars. Instead, we now think the main reason for the dinosaur's going is an asteroid, about the size of Manhattan that crashed to earth — an asteroid Dr. Flanders knew nothing about at the time.

It was discovered by a father and son team named Alvarez. Walter, the son, is a geologist (a rock guy). His dad Luis was a physicist (knows about objects in motion). Scientists, like the rest of us, seem to go where their enthusiasms take them. But this time, the evidence, in the mineral earth, the fossil record, confirmed their story. Not everybody agrees it was just that big rock that did it, but when the data says "yes," biologists, botanists, zoologists, paleontologists have no choice but to accept the evidence.

That's how science works. Sometimes even the most beautiful stories, the ones you'd love to believe in, end up, alas, in the garbage can.

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