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Are measures to tackle climate change working better than the world thought? Emissions of greenhouse gases stalled last year, that is according to the International Energy Agency, even though the global economy kept expanding. But is this a lull before the storm?

We chat to iRobot co-founder Helen Greiner and find out what inspired her to work with drones.

One of the biggest events in European horse racing, the Cheltenham Festival, has come to an end today. Over the last four days a record number of people have attended the racing in the provincial English town, many of them from Ireland. We get a flavour of the sporting occasion that is becoming big business.