Serena, Nadal and Thiem advance to U.S. Open quarter-finals

A young Nigerian graduate has embarked on an ambitious drive to address Nigeria's worrying levels of voter apathy. He says he's troubled by the "emotional detachment" from political activities by most people — especially in northern Nigeria.

A year ago, the Taliban retook Kabul. In their first press conference after seizing power in Afghanistan, they surprised the world with the announcement of moderate policies. A key pledge was to address women's rights.

Translation and language-learning giants like Google and DuoLingo are expanding language databases available online, in a push to widen representation and reduce bias in artificial intelligence systems. Residents in countries like Uganda where the native tongue Luganda is not taught in schools, say adding their languages to these platforms could be a game changer.

Germany's €9 monthly travel pass has boosted rail usage, particularly in more rural and tourist areas, the latest statistics suggest. However, road usage is virtually unchanged, suggesting little impact on commuters.

Beijing's military threats against Taiwan after Nancy Pelosi's visit are unprecedented. For the time being, however, not much will likely change as neither country can do without the other as a trading partner.

The top German official for antiziganism says Romani people face structural discrimination in Ukraine. Roma make up 1-1.5% of the country's population.