A global surge in avian flu outbreaks in birds and some mammals is worrying poultry farmers, scientists, and health experts. The trend is provoking questions about the future of the disease and globa…

U.S. space exploration inspired a generation of students and innovators, but NASA’s role has diminished, and the number of global space competitors is growing.

With President Donald J. Trump advocating for deep cuts to U.S. foreign aid, debate has renewed over the role of foreign assistance funds in boosting growth, promoting democracy, and saving lives.