The "Samsung SAT" is the South Korean company's aptitude test that features a gauntlet of 160 questions in 140 minutes. Test yourself with a few practice questions.
The U.S. State Department, the United Nations and human rights groups say South Korea's controversial National Security Law chokes freedom of expression.
Assimilating into South Korean society is rarely easy for North Korean defectors. Top plastic surgeons are volunteering their services to help minimize the scars they bear from painful, abusive pasts.
President Obama said Donald Trump's statements on nuclear issues show he "doesn't know much about foreign policy, or nuclear policy, or the Korean Peninsula, or the world generally."
The isolated nation has undertaken a series of provocative steps, launching missiles and bombastic rhetoric. Analysts are debating what leader Kim Jong Un is trying to achieve.
The latest missile firing comes amid heightened tensions on the peninsula, following wide international condemnation for the North's January nuclear test.
Google's AlphaGo program has already won the best-of-five match against Lee Sedol. But Sedol now has ensured it won't be a clean sweep by getting a victory in on game four.
Lee Sedol has lost three games in a row to Google's AlphaGo program, which means the program has officially defeated the human. Lee said the pressure was intense, and he felt "powerless."