Oil producing nations face an uncertain future - a podcast by BBC World Service

Think tank Carbon Tracker projects trillions of dollars of losses for major oil nations. Andrew Grant is Carbon Tracker's head of climate, energy and industry, and explains the basis of the predictions. And we hear how the countries involved plan to diversify away from oil, with energy analyst Cornelia Meyer of consultancy Meyer Resources. Also in the programme, as the second cricket test match in this series between India and England starts this weekend, the BBC's Rahul Tandon reports that more Indian players are now coming from smaller towns than bigger cities, and how that reflects a broader economic change taking place in the country. Plus, shares in dating app Bumble are trading on the New York Stock Exchange for the first time. Alex Wilhelm is senior editor at TechCrunch, and explains the attraction of such apps to investors. And with Valentine's Day approaching this weekend, our reporter Deborah Weitzmann meets some of those looking for, and finding, love.

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