After the success of the Ice Bucket Challenge that swept YouTube, European young people are hoping for viral success with a campaign to bring world attention back to the conflict on Ukraine’s eastern border. Meanwhile, killing is the subject of newly-published scientific research. In this case, the killers, though, are chimps. And a Chinese tennis star retires in her 30s, having brought tennis and a bit of sports freedom to her home country, in this weekend’s Global Scan.