"Exports improved even though the yen was depreciating, suggesting that there hasn't been any major impact on growth yet, " said Kong Dong-Pak, an analyst at Hanwha Securities.

BBC: South Korea economic growth hits two-year high

At the moment Dr Haller, who is now at McGill University in Montreal, is collaborating with Wenbo Tang of Arizona State University and Pak Wai Chan of the Hong Kong Observatory to apply Lagrangian theory to the problem of aircraft taking off and landing in difficult circumstances.

ECONOMIST: Lagrangian coherent structures

The food is very sophisticated in Hong Kong, and I always go back to the same place: Pak Loh Chiu Chow Restaurant.

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