Massive US storm brings tornadoes to South, blizzard threat

A massive storm blowing across the country Tuesday spawned several tornadoes that wrecked buildings and injured a handful of people in Oklahoma and Texas, left two people missing in Louisiana and saw much of the central United ...

A dual boost for optical delay scanning

Various applications of pulsed laser sources rely on the ability to produce a series of pulse pairs with a stepwise increasing delay between them. Implementing such optical delay scanning with high precision is demanding, ...

Storm Fiona slams into east Canada, major power outages

Powerful storm Fiona knocked out electricity to more than 500,000 homes Saturday as it lashed east Canada with strong winds and heavy rains in conditions that police said were "like nothing we've ever seen."

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