Tonight:

Zero intolerance. An Edmonton teacher's tough marking policy -- if your assignment's late, you fail -- makes him a marked man.

Syria's multiplying militias. Another massacre -- this time, the execution of thirteen factory workers -- shows the conflict splintering into sectarian fragments.

A peace plan on life support. Britain's Ambassador to the United Nations talks about the future of Kofi Annan's peace iniative in Syria.

Driven to tears. The hacker group Anonymous threatens dozens of people who bought tickets to the Montreal Grand Prix -- and publishes their personal information online.

Go forth and multiply. That's what a Swedish scientist did -- and now his son has made history by doing some extraordinarily complex multiplication of his own.

And...high school non-sequential. Ninety-four-year-old bandleader Dal Richards returns to his Vancouver alma mater to give a concert -- and breaks a world record in the process.

As It Happens, the Friday Edition. Radio that's having an impressive senior year.

You don't mess with Mr. Dorval.

Students who took Lynden Dorval's physics and science classes at Ross Sheppard High School in Edmonton knew that if they didn't hand in an assignment, there would be consequences: a mark of zero.

Now Mr. Dorval is suspended, and expects to be fired when the term ends.

We reached Lynden Dorval at home in Edmonton.

Talks over the student crisis between the Quebec government and the student leaders are at a standstill.

Last night, negotiations collapsed, but both parties say they are open to re-opening communication.

Quebec Premier Jean Charest has, for the most part, kept silent on the issue. But today, he spoke to CBC Montreal's Bernard St-Laurent.

For the record, here's part of that conversation, starting with Bernie.

As you heard, CLASSE has said it will disrupt next week's Montreal Grand Prix if its demands aren't met. But that's not the only threat to the race -- and CLASSE is not the only group that could potentially cause problems.

Earlier this week, the hacker group Anonymous released the names and phone numbers of more than a hundred people who bought tickets to the Montreal Grand Prix.

The group also sent out a threatening email to some ticket holders. That email reads, in part, quote:

"Montreal is an epicenter of an escalating social war. The spark of the student strike set a fire, and tens of thousands are now resisting. Do not fool yourself into thinking that you can avoid or contain us, or that the police will protect you from our makeshift weapons. There is nowhere to hide. We know every street, every alley, every park. We know where you will sleep, where you will shop and where you will drink. We have been planning to crash your party for some time now."

Unquote.

Frank Thoringer was one of the people who got that message. We reached Mr. Thoringer at his home in MacTier, Ontario.

Over the course of a seven-decade career, band leader Dal Richards has earned the Order of Canada, an honourary doctor of letters from the University of British Columbia, and the nickname "the Canadian King of Swing."

And now he can add one more accolade to his collection: the Guinness World Record for "longest lapsed time between performances by a high school band leader."

Mr. Richards was awarded the record last night after leading the Magee High School band in Vancouver in a special performance -- seventy-five years after he left the band when he finished high school in 1937.

We reached ninety-four-year-old Dal Richards in Vancouver.

Only days after the massacre of more than a hundred people in a Syrian village -- most of those people women and children -- there are reports of more mass killings.

Today, thirteen factory workers may have been executed by a government-backed militia.

Some now fear that worsening sectarian tensions may now be the beginning of a new and bloody chapter in Syria

BBC reporter Paul Wood has just returned from three weeks reporting secretly from inside Syria. We reached him in Beirut, Lebanon.

The United Nations Human Rights Council voted overwhelmingly today in support of a resolution "condemning the killings of dozens of men, women and children" in the Syrian village of Houla last week. Only Russia, China and Cuba voted against the resolution.

Meanhile, UN special envoy Kofi Annan is on a whirlwind tour through the Middle East, attempting to salvage his peace plan for Syria.

Sir Mark Lyall Grant is Britain's Ambassador to the United Nations. We reached him at the UN in New York.

Julian Fantino, the Assistant Minister of Defence, is having trouble explaining some testimony he gave a few weeks ago.

Mr. Fantino is the former head of the Ontario Provincial Police. In 2007, a judge called on him to apologize to a man named Cecil Bernard George. During the 1995 Ipperwash standoff, Mr. George was beaten by the OPP riot squad until his heart stopped. His cousin, Dudley George, was shot and killed by police on the same night.

Last month, Mr. Fantino was called to testify at an Ontario Human Rights Tribunal hearing into allegations of racism at the OPP. One of the lawyers asked Mr. Fantino whether he ever got around to apologizing to Bernard George.

Mr. Fantino said he made every effort but, unfortunately, Mr. George got sick and died before he got the chance.

We reached Bernard George at the Kettle and Stony Point First Nation, near Sarnia, Ontario.

No doubt you're used to paying a bit of a price the day after you go to a party.

But now you'll have to get used to paying the price before the party even starts.

This week, the Copyright Board of Canada announced additional fees for public events that play copyrighted tunes. Receptions, parades, fashion shows -- those sorts of things. For the most part, the fees are pretty modest. Four dollars for every parade float that plays music. Nine dollars and twenty-five cents for a fashion show. About sixty bucks a day for circuses, ice shows and firework displays. Oh, and if there's dancing at any of those events, the price doubles.

Now, there are already fees for playing music in public -- but that money goes to the people who own the rights to the music. The new fees will go towards the artists.

And, so while the Copyright Board's decision may be a bit of a buzzkill for event organizers, for the actual performers, well, we're guessing it's music to their ears.

It's a case that continues provoke more questions than answers.

Today, Montreal police named Jun Lin as the victim of the well-publicized murder and dismemberment in Montreal. An international search is now underway for suspect Luka Rocco Magnotta.

Reporters had a lot of questions at this morning's news conference. And here's part of what Sergent Ian Lafrenière told them, for the record.

Last night on the program we spoke with Roger Renville. He's a lawyer in Montana and he spent days trying to convince six different police organizations that he'd witnessed a person being murdered in an online video. That interview brought this e-mail from Chris Taggart in Halifax. He writes:

"Help me out here. The police forces of North America beg, plead, and even grovel for the 'public' to help them in preventing and solving crimes. Lo and behold, a Montana lawyer with pretty good credentials spots a grisly crime on the Web. He calls the Sheriff. Response: not our jurisdiction. He calls the FBI. Response: no answer, it's a holiday weekend. He digs deeper. Result: it looks like Toronto.

"He calls Toronto. Response: it's fake. He almost gives up, but tries the RCMP. Response: skeptical, but then a few key words and someone wakes up -- a bit late in the day.

"Have we gained insight as to why the 'public' has given up on helping the police forces?"

We also received questions about why Roger Renville watched the video, or why he was on the website hosting the video. Mr. Renville did answer that question in an interview done with the CBC via Skype. This is Roger Renville's explanation as to how he stumbled upon the video.

Twenty-two thousand barrels of oil and contaminated water have spilled out of a pipe and into the muskeg near Rainbow Lake, Alberta.

The area, near the border with the Northwest Territories, is so remote that it's hard to know exactly how bad the spill is. The location is also one the reasons being offered for why Pace Oil and Gas, the company responsible, didn't know about the spill until a competitor's plane happened to fly over it.

That doesn't satisfy Rachel Notley. The NDP MLA blames a monitoring system that she says gives oil and gas companies too much responsibility for policing their own bad behaviour. We reached Ms. Notley in Edmonton.

A fundamental piece of the Canadian iconography is being replaced by an imposter. A foreigner, no less!

Yesterday, we spoke with Sean Blaney, a botanist who says that the Canadian symbol of the maple leaf is being replaced by the Norway Maple leaf on corporate and government logos. Which is because the Norway maple -- an invasive species -- is displacing the Canadian sugar maple.

When Carol asked if there were some other quintessentially Canadian leaf we could use as a symbol, Mr. Blaney suggested a white birch leaf. And then we heard from Talkback.

We posted a picture of a Canadian flag with a white birch leaf replacing the maple leaf on our Facebook Page -- and that got a lot of response.

Scott Bidstrup commented: "The white birch leaf is not sufficiently unique to make an impression. Stick with the sugar maple. It's so very Canadian."

And Ryan James Oliver Kennedy wrote: "The maple leaf has that distinct shape to it, similar to the star. Nothing will compare to the maple leaf in distinctness."

And while most of you defended the sugar maple, we did get a unique suggestion from Josh Kurek in Kingston, Ontario, who sent this email:

"I listened to you challenge your guest, Sean Blaney, on the spot, to determine a more appropriate botanical symbol for Canada than the Sugar Maple. Immediately, a botanical image came to my mind: the fiddlehead, or ostrich fern!

"The ostrich fern is widespread and native to all provinces and territories of Canada; ornamental to gardeners; frequently used in an artistic fashion in photography, paintings, and ceramics, etc. A real symbol of spring after the long Canadian winter. And, most important, young ostrich ferns are edible and tasty -- serve with butter and a bit of lemon juice or vinegar."

Thank you Josh Kurek from Kingston for that email and the recipe. And thanks to everyone who wrote or called.

There's reason to be hopeful. There's also reason to be apprehensive.

This week the Truth and Reconciliation Commission was in Toronto for three days. The commission is set up to hear the experiences of Aboriginal people who suffered under Canada's Residential school system.

Today, it heard from Darlene Ritchie. Ms. Ritchie is the executive director of At^lohsa Native Family Healing Services in London, Ontario. She's also chairperson for the Toronto Council Fire Native Cultural Centre. Both centres will be affected by the recent decision to shut down the federally-funded Aboriginal Healing Foundation.

For the Record, here is part of what Darlene Ritchie had to say today:

Last week, in the scientific journal Philosophical Transactions of the Royal Society A, a paper was published. A co-author that paper: Linus Hovmöller Zou.

It's kind of an unusual name. In fact, Linus himself has probably been teased for it by his friends. Most of whom are eleven. Because Linus is eleven. And last year, he solved an unbelievably complex structural chemistry problem, together with his father.

We reached his father, and co-author, Sven Hovmöller, in Stockholm, Sweden.

The Who's poignant and haunting, "Behind Blue Eyes". And if you think about it -- and tweak the lyrics slightly -- it could have been written about one special woman. Because no one knows what it's like to be Her Majesty, Queen Elizabeth the Second.

Well, on the occasion of the Queen's Diamond Jubilee, Professor Robert Hazell from England's University College London Constitution Unit is here to tell us a thing or two about royalty. Today, he emailed As It Happens this press release. It reads:

"We take the Monarchy for granted, but it does require some extraordinary sacrifices on their part," says the Professor. Sacrifices that include basic human rights we all take for granted.

Some of you may scoff. But the next time you get a paycheque, look at that little pension contribution box. It's not on the Queen's paycheque. There is no pension for the Queen.

Also, she has no right to privacy, and no real freedom of expression. She can't just zip over to Cuba for a week to get some sun. Any foreign travel has to be rubber-stamped by Britain's notorious Foreign Office.

And what about her original career aspirations? Maybe she wanted to be a train driver, an astronaut, a race car driver. Doesn't matter, because Queen Elizabeth the Second never had any choice.

So on this Diamond Jubilee, Professor Robert Hazell says it's worth just pausing and recognizing the demands we make of her Majesty. She gives us so much -- and what does she get in return?

Besides of her annual government stipend of roughly twenty million dollars. And the fact that, in 2011, Queen Elizabeth's estimated wealth in 2011 was over five hundred million dollars Canadian.