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North Korea said it tested an “underwater nuclear weapon system” in response to joint naval exercises by the U.S., Seoul and Tokyo.
The first working graphene semiconductor outperformed silicon, suggesting that the supermaterial could be the future of electronics.
The cosmos may have existed forever, according to a revolutionary model that extends Einstein’s theory of general relativity using quantum correction terms. By taking into consideration dark matter and energy, the model can concurrently address a number of concerns.
