Germany questions warning system after deadly floods

As Germany mourns more than 150 people who died in floods and begins a mammoth clean-up task, questions are mounting about whether the country's weather warning system failed to keep citizens safe.

Front-row view reveals exceptional cosmic explosion

Scientists have gained the best view yet of the brightest explosions in the universe: A specialized observatory in Namibia has recorded the most energetic radiation and longest gamma-ray afterglow of a so-called gamma-ray ...

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