President Joe Biden, in Poland after his lightning trip to Ukraine, is declaring that there are "hard and bitter days ahead" in fighting off Russia's invasion.

The first astronauts in more than 40 years from India, Poland and Hungary are back on Earth. They closed out their private ...

Domestic pigs (Sus scrofa domesticus) are believed to have branched off from wild boars (Sus scrofa) through domestication events that occurred independently in East Asia and the Near East, beginning ...