An accounting of all the water that should have been and gone on Mars’s surface has come up with a discrepancy that shows ...

Seizing the highly enriched uranium would be more difficult and complex than anything U.S. Special Operations forces have ...

Washington — President Trump and his allies are pushing Senate Republicans to pass an elections-related bill known as the SAVE America Act, which Democrats warn could disenfranchise millions of ...

High nitrogen losses by ammonia volatilization are expected when urea is used as the source of N. The use of controlled-release urea and urease inhibitors are possible strategies to reduce such losses ...