Black boxes: Crucial to air crash probes

A top priority for air crash investigators is to locate and analyse a plane's two black boxes which hold vital clues to what caused it to go down, including cockpit conversations.

Firms obscure bad news in financial reports, study suggests

Firms that publish complex or ambiguous annual reports might be trying to mask poor performance and could be inadvertently signalling a crash in their stock price, according to new research from the University of Alberta.

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