Our correspondent Anupreeta Das witnessed the rescue operation following the catastrophic flooding in Nepal and Tibet, in which a torrent of debris and water carried away entire villages in just minutes.

Our correspondent Emma Bubola travels to northwest Patagonia, the epicenter of an oil boom that Argentina hopes will revolutionize its economy.

Our reporter John Eligon takes a six-mile walk between two townships in Cape Town to show how the barriers left by apartheid still exist 30 years later.