The US central bank left interest rates unchanged at a range of 5.25% to 5.5%, a 23-year-high. We look into the details. Tech firms in Denmark have come together to develop and roll out a new computer game intended to engage girls in science and technology outside of the classroom. We get the latest from our correspondent. And the world's most expensive drug will soon be available in the US at a price of $4.25m. We hear about the rare disease it treats and the high cost of developing medicine to battle it