The future direction of St Helena (the remote British territory in the South Atlantic) has hit a snag. Famously, the island could only be reached by a 5-day voyage on the RMS St Helena from Cape Town. But in 2010 the UK Government committed overseas aid to build a new airport on the island, which opened in May 2016. The project cost was over £285m. However, no-one foresaw the problem of “wind shear” – a sudden and powerful change in wind direction – which has meant that comme