Hello and welcome to the Intelligence on Economist Radio.

I'm your host, Jason Palmer.

Every weekday, we provide a fresh perspective on the events shaping your world.

China's outbreaks of swine flu are spreading, from huge industrial farms to tiny backyard operations.

More than half of the world's pork comes from China, and half of those pigs are already at risk.

We look at how the crisis might transform the country's pork industry and the world market for protein.

And this week, San Francisco's mayor will sign legislation outlawing the sale of e-cigarettes.

We examine the evidence about the harms of vaping, how likely kids are to take it up,

and whether a ban addresses either problem.

But first...

In Sudan, tens of thousands of people demonstrated in the capital Khartoum yesterday against a military junta.

It was the first major demonstration since military forces cracked down on a protest camp a month ago, killing dozens. The protests first erupted at the end of last year, when citizens angered by rising costs began demanding the ouster of President Omar al-Bashir.

He stepped down in April and a transitional military council took over.

Protesters continue to demand a handover to civilian rule and justice for people killed at last

month's protests.

Yesterday, demonstrators spilled into the streets heedless of an internet blackout intended

to stymie their

organization, and of the risk of reprisals from the paramilitary rapid support forces.

Seven people are reported to have died.

Most of the people, they don't think they are safe because the armed forces used extensive

violence against them.

Osama Mirgani is the editor-in-chief of Altayar newspaper.

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