Ukraine’s government wants to restore the country’s frontier to where it was before Russia launched its first invasion more than a decade ago. The U.S. defense secretary said that was “unrealistic.” ...

Researchers have systematically detailed, step by step, how cognitive maps form in the brain's hippocampus -- a region responsible for learning and memory.

NASA scientists used satellite measurements to map out local subsidence and uplift across the Golden State, which plays into ...

President Trump’s moves to pause refugee resettlement, freeze foreign aid and suspend funds to promote democracy have added more chaos to one of the world’s most urgent humanitarian crises.

How battle lines compare to pre-war 2014 borders ahead of potential peace talks - Donald Trump’s administration says it ...