President Donald Trump this afternoon ordered the grounding of Boeing 737 Max 8 aircraft, reversing an earlier decision by US regulators to allow the planes to keep flying. Also, eight years after the start of the conflict in Syria, the war continues to take a heavy toll on the Syrian people. Host Marco Werman speaks with a former English teacher from Aleppo who took part in some of the earliest anti-government protests in the city. Plus, The World's Carolyn Beeler checks in from Antarctica. Beeler is traveling with scientists who are studying the effects of climate change on the ice shelves in the southern continent.