Why do the US midterms matter for Trump and Congress?
Republicans and Democrats jockey for control of Congress, which will set course for Trump's final two years in office.
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Republicans and Democrats jockey for control of Congress, which will set course for Trump's final two years in office.
Brazil is heading back to the polls, but the impact could be felt worldwide. With the Amazon vital to the health of the planet, the election could help shape its future.
Scientists recreated a particle-forming process linked to the extreme physics of the early universe using a 13-ion quantum simulator. The breakthrough suggests quantum computers could eventually help researchers investigate how matter formed and evolved after the Big Bang.
Donald Trump says a new deal gives the US complete control over the island's security.
Law enforcement in the US needs high hiring standards. But it also needs reform and trust-building in communities.
When physicists said they may have spotted evidence of dark matter almost 100 years after it was proposed as a theory, the internet lit up. Here's why we're searching for the thing that holds everything else together.
The question of how important making our electricity clean is to going green is coming under increasing scrutiny