Today, the U.S. Embassy in Yemen was attacked by furious demonstrators. And in Cairo, Egypt, protesters hurled stones at the U.S. mission.

The reason for the fury is an American film that mocks Islam and the Prophet Muhammad. And in Libya on Tuesday, fury over the same film left four Americans dead -- and also left a lot of unanswered questions.

Authorities there say they have made arrests today in connection with the violent attack on the U.S. consulate in the city of Benghazi.

But it remains unclear who actually carried out the assaults on the anniversary of September eleventh, and how Ambassador Christopher Stevens and three of his staff were actually killed.

And there are also questions about the future of Libya itself, which until yesterday has been regarded as something of a success amid the tumult of the Arab Spring.

Ali Tarhouni is the former acting prime minister of Libya, and has been actively involved in the formation of the new Libyan government. We reached him in the capital, Tripoli.

He's a central figure in Quebec's recent past -- but these days, he's looking at the province's future.

Former Parti Quebecois leader and provincial Premier Lucien Bouchard has made waves this week -- openly criticizing current PQ leader Pauline Marois. He's said that the party's current leader and platform are too radical on issues relating to language and sovereignty. The man who largely orchestrated the 1995 referendum on Quebec sovereignty has a new book out about his political career. The book is called "Lettres à un jeune politicien" -- which translates into "Letters to a Young Politician". And as he explained to Radio-Canada yesterday, he's hoping the book will have an impact on the next generation of political activists.

Here is part of what he had to say, for the record.

Here's the good news: it may just mean the Toronto Maple Leafs won't have a losing season. The bad news is they may not have a season at all.

As the Saturday deadline looms for a deal in the labour negotiations between N-H-L players and the team owners, it's looking less and less likely that "Hockey Night in Canada" will be on the air anytime soon.

And sadly, this may suit many owners -- represented by league commissioner Gary Bettman -- just fine.

Both sides in the dispute held news conferences today, and neither reported any progress.

Jonathan Gatehouse is a senior correspondent for Maclean's magazine, and is the author of the just-released book The Instigator: How Gary Bettman remade the league and changed the game forever.

We reached Jonathan Gatehouse in Toronto.

This week, some very important films are premiering. But there will be no red carpet gala, and Ryan Gosling will not be anywhere nearby.

The films aren't even new. In fact, they are very old. The oldest moving pictures in colour ever made.

Yesterday, the U.K's National Media Museum unveiled the films, which were the work of a photographer and inventor named Edward Turner in 1901 or 1902.

Paul Goodman, is the head of Collections for the museum. We reached him at home, in Leeds, England.

The Coastal First Nations of British Columbia have a message for bear hunters: you're welcome to watch the bears, but you can't shoot.

A coalition of ten First Nations on British Columbia's central and north coasts have declared a ban on trophy bear hunting in their traditional territory. The area is known as the Great Bear Rainforest, and it covers more than seventy thousand square kilometres of land.

As you might imagine, hunting tour operators are none too pleased with the announcement. And the B-C government says the First Nations have no authority to implement the ban.

Doug Neasloss is the Chief of the Kitasoo - Xai-xais First Nations, which is part of the coalition. We reached him in Klemtu, British Columbia.

Today, across the city of Karachi, Pakistan, dozens of mourners attended funerals. They were burying some of the people who died in a fire at a garment factory.

With more than two hundred dead, the blaze is being called the worst industrial accident in Pakistan's history. And because the building's exits were blocked, it's also being called preventable.

Nadeem Jamal is a freelance reporter. We reached him in Karachi outside the site of the fire.

When you're a professor, and you write an important research paper, it's all-consuming. You struggle to get across complex, original ideas -- and to do it in the clearest way possible.

So imagine putting in all that work, emptying your brain onto the page -- and drinking all that coffee -- only to find that someone else has used your work without giving you credit.

That's what happened to MIT professor Martin Bazant. To his shock, he discovered sections of his research copied and pasted in a paper written by top Canadian scientist Dongqing Li and Yasaman Daghighi a PhD student. Both are the University of Waterloo.

We reached professor Martin Bazant earlier today in Amherst, Massachusetts.

It wasn't just life imitating art -- it was a matter of life and death imitating art.

Billy Campbell is an actor. He's starring in a new movie called "The Disappeared" about six men lost at sea. It's set to premiere at this weekend's Atlantic Film Festival.

Mr. Campbell also owns a schooner called The Martha Seabury. And on its maiden voyage on Monday night, from Lunenburg to Newport, Massachusetts, the crew spotted an overturned sail boat.

Billy Campbell spoke with Phlis McGregor of CBC Halifax's "Information Morning" -- and told her what happened next.

Canada isn't exactly racing to the aid of Feras Saidam.

On Monday, Mr. Saidam told Carol about his family's flight from war in Syria to uncertainty in Turkey.

Mr. Saidam had hoped that, from Turkey, he would be able to pursue his family's longstanding bid for asylum in Canada. A group of British Columbians had sponsored them. But, when Immigration Canada pulled out of Syria earlier this year, the application was put on hold.

Now it looks like the Saidams' escape to Turkey may have put them further from a new life in Canada.

Tony Davis is one of the Saidams' sponsors. We reached him in Nanaimo, B.C.

All the air we breathe is different. And to demonstrate this, scientists at the University of California Berkeley have made air audible.

Using a process called gas chromatography, scientists first separated the thousands of different compounds found in air. And then, by putting these compounds on a spectrum according to their mass structure, scientists were able to assign each compound a tone.

What you end up with is a musical cacophony representing the air we breathe. And that sound differs depending on where the air sample is taken.

Now, the scientists haven't done this just to be cute or artistic. They think the sounds are a good way for us to find and understand air pollution.

Have a listen to this sample -- a musical representation of air from a traffic tunnel in Oakland, California.

According to the scientists, the low drone at the end represents hydrocarbons created as a result of burning fossil fuels.

That drone serves as an indicator of the presence of pollutants. And it's no coincidence that it sounds ominous: it also audibly demonstrates the negative effects of vehicle emissions and fossil fuels.

The group also took an air sample from a pine forest in the High Sierras of California -- miles away from any roads.

You can hear a bubbly, sparkly sound at the start, which scientists say represents small compounds released by plants. But at the end, there is a low hum again. It's not as intense as the drone from the traffic tunnel, but it's there. And scientists believe that hum shows fossil fuel pollutants creeping into the forest's fresh air.

Here's what the forest sounds like.

The research is still in its early stages. But it looks like one of the best ways to understand our changing environment is science that's innovative -- and science that's sound.

This week, the case of Egyptian-born Mohamed Mahjoub continues in federal court. And it just keeps getting more complicated.

Mr. Mahjoub has been the subject of a Security Certificate since 2000, and has been in detention, or under house arrest, for the past twelve years. He is accused by the Canadian government of being a terrorism suspect.

Earlier this week, the federal court heard testimony from an Egyptian lawyer, who discussed cases in that country involving alleged members of a group of Islamic extremists called the Vanguards of Conquest. According to the Canadian government, Mr. Mahjoub was second-in-command of that group.

The alleged leader of that group was named Ahmed Agiza. In 2001, he was sent from Sweden -- on one of the infamous CIA rendition flights -- to Egypt, where he was imprisoned.

But then, last year, Mr. Agiza was released from Egyptian prison. And the Swedish government has since apologized to him, awarded him compensation, and granted him permanent residency status. And that may be significant for Mr. Mahjoub's case.

Swedish lawyer Bo Johansson has been representing Ahmed Agiza since 2001. He is in Stockholm.

The virgin birth really happened -- and a molecular ecologist named Warren Booth has the proof.

Just to clarify: the virgin here is a female snake, and the miraculous birth delivered a brood of vipers. But still, the University of Tulsa professor says he's documented the first known case of a wild species that normally reproduces sexually generating offspring without any male contributution at all.

We reached Professor Booth at his lab in Tulsa, Oklahoma.