Science & Environnement
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Hurricane Irma strengthens to Category 5 storm, with 180 mph winds
The storm could hit Florida, Georgia or the Carolinas, or even head into the eastern Gulf of Mexico.
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What is a hydrogen bomb? A look at the latest potential threat from North Korea
Here's a look at what a hydrogen bomb is, and what exactly it can do:
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Eclipse spectacle set to grip US public
Skywatchers in the United States are preparing for the spectacular sight of a total solar eclipse.
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Eggs containing fipronil found in 15 EU countries and Hong Kong
Fifteen EU countries as well as Hong Kong and Switzerland have received eggs contaminated with the insecticide fipronil, the European Commission says.