North Korea's next nuclear test may well pave the way for a sizeable expansion of its nuclear arsenal.

CNN: Rescind North Korea's license to provoke

This could pave the way for a test to predict which patients are most likely to benefit from the drug.

BBC: NEWS | Health | Smart drug for lung cancer tested

It could pave the way for a new test to identify people at risk, so action could be taken to prevent the loss of hypocretin neurons before they fell to a level low enough to trigger narcolepsy symptoms.

BBC: NEWS | Health | Immune system link to narcolepsy