UEFA, European football's governing body, is currently trialling a new system for penalty shoot-outs that is based on mathematical research. Currently 60% of penalty shoot-outs are won by the team going first, so can this unfairness be overcome?

The death of a teenager in India at the hands of a mob led to an online campaign, which within days sparked a trending hashtag and worldwide street protests. We pick apart the #NotInMyName campaign.

And when many people struggle to maintain one relationship, why do some people enter into multiple simultaneous marriages? Lucy Ash speaks to polygamists around the world to find out why they were drawn to these complex relationships and what impact they have on the people involved.

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