http://adf.ly/1SZdI2, http://adf.ly/1XIsTW, http://www.ctvviet.com, http://www.nhac24.com <br />As tensions rise on the Korean Peninsula and abroad, we're explaining what exactly a THAAD unit is, what it's used for, and why China is concerned about it. Also featured are reports on International Women's Day and CNN's Freedom Project. And we're examining a recent study that linked social media usage with loneliness.
