Hello, everybody. Today, there are some 2.2 million people behind bars in America. Millions more are on parole or probation. All told, we spend 80 billion taxpayer dollars each year to keep people loc

Hi, everybody. One of the most urgent challenges of our time is climate change. 大家好。当代最紧迫的一项挑战就是气候变化。 We know that 2015 surpassed 2014 as the warmest year on record - and 2016 is on pace to be even ho

Thank you very much. And I am pleased to be here in Turkey today and to be able to meet Prime Minister Yildirim and President Erdogan just one day after meeting the new US President Donald Trump in Wa

Imagine waking up to a stranger -- sometimes multiple strangers 想象一下，睡梦中醒来时旁边有个陌生人--有时是好几个陌生人， questioning your right to existence for something that you wrote online, 因为你在网上写的文字，而质疑你的生存权， waking up t

As things stand now, the financial system of each country is being sustained and supported by its own government. The governments are primarily with their own economies. This tends to give rise to fin