A strong geomagnetic storm could light up the night sky with auroras across large parts of the United States tonight, ...

With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke ...

Less than a month after the September 11 terrorist attacks on the United States, U.S. troops—with ... in 80 nations on six continents. This map is the most comprehensive depiction in civilian ...