Shooters often kill people who are, or presumably once were, close to them. 25 percent killed a parent, child or stepchild, and 23 percent killed a current or former romantic partner. Even some large ...

A mass shooting has plunged a tribal reservation in Canada into lockdown as cops say a gunman left multiple fatalities. The horror unfolded on the Cree Nation of Mistissini reservation, located in the ...

Donald Trump has stepped up his pursuit of Greenland, stating he "no longer feels an obligation to peace," and that countries opposing could face tariffs. The US president wrote a strongly-worded ...

Mass spectrometry is an analytical technique that uses an instrument called a mass spectrometer to measure the mass-to-charge ratios of molecular ions. Molecules fragment within the mass spectrometer ...

Like pieces in a giant jigsaw puzzle, continents have split, drifted and merged again many times throughout Earth's history, but geologists haven't understood the mechanism behind the moves. Like ...