Researchers just confirmed a historic "megaflash" from 2017 stretched more than 500 miles from Texas to Missouri, compared to an average lightning strike measuring 10 miles.

An earthquake hit the eastern coast of Russia but officials have canceled a tsunami advisory

Beijing's defense chief warned against the "law of the jungle" in a 30-minute keynote address at a major security conference.

"This behavior often stems from a need to assert social dominance," noted one therapist.

Packers tight end Tucker Kraft reportedly suffered a knee injury at practice, but the early updates are encouraging.