UN chief concerned nuclear 'coffin' leaking in Pacific

UN Secretary General Antonio Guterres raised concerns Thursday that a concrete dome built last century to contain waste from atomic bomb tests is leaking radioactive material into the Pacific.

How to destroy an asteroid without nuking each other first

In the event of an asteroid heading to Earth and likely to cause catastrophic damage, an Armageddon-style nuclear explosion may well be our best line of defence. But would doing so lead the way to potential space-based nuclear ...

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