Protesters returned to the streets of Khartoum this weekend, again with deadly consequences. We look back to last month’s violent crackdown, and consider Sudan’s troubled push for democracy. China’s swine-flu outbreaks threaten hundreds of millions of pigs—but might spark long-overdue reforms in the country’s pork industry. And, we examine San Francisco’s e-cigarette ban: if vaping is safer than smoking, should it be stubbed out?