Increased YAP expression and heterodimerization of TM4SF19 protein due to oxidative stress in oral cancer cells. (Courtesy of KAIST)/News1 Korean researchers have identified a mechanism by which smoking and drinking promotes oral cancer proliferation.

The U.S. and South Korea will hold the Freedom Shield military exercise from March 9-19, amid tensions with North Korea's evolving threats.

North Korea views U.S. strategic flexibility as a threat, fearing increased military presence rather than a security gap for South Korea.