Warren Buffett, CEO of Berkshire Hathaway I

In the stock market, small margins separate success from failure. Ten per cent is a big difference in performance; 100 per cent, an oceanic one. And (...)

A sedated white rhino is blindfolded and strapped with a rope by veterinarians and rangers of the Kenya Wildlife Service (KWS) after it was shot with a tranquilizer dart from a helicopter to be sedated in a private conservancy near Naivasha, Kenya, 30 October 2013. The horn of the rhino was cut and a GPS-tracking device was fitted to enable rangers and scientists to track the rhinos’ movements and help combat poaching. Photograph: Dai Kurokawa/EPA

American philanthropist Howard Buffett donated $24 million to South Africa’s national parks service today to fund a high-tech campaign against (...)