Protons minimize energy by forming pairs with opposite spin. Same for neutrons. Each pair acts like a particle in its own right. So nuclei act very differently depending on whether they have an even ...

With two rounds of the NCAA tournament down, there are still plenty of NBA prospects advancing to the Sweet 16. A number of big names have also been sent home early. Scouts remain very curious ...

Need a break? Play the USA TODAY Daily Crossword Puzzle. On the Opry stage during the 100 year celebration, Underwood performed her two favorite Travis songs, “Three Wooden Crosses “ and ...