Shortly after arriving in Turkey on Tuesday for a NATO summit, President Trump again criticized European allies, saying they ...

Earth’s history has been shaped by five mass extinctions—catastrophic periods when life changed so dramatically that entire ...

A San Diego tech company has developed under-water robots for the US Marine Corps that will help the military clear sea mines ...

Are you keen to cajole your little ones into a spot of family viewing? Struggling to prise your teenagers off their phones?