美国有线新闻 CNN 2015-09-04（在线收听）

 Welcome to the show. I'm Carl Azus. Today, we are taking you to Alaska. In his journey to the state-known as the last frontier, President Obama becomes the first sitting US president to visit the arctic. One reason for his trip, his administration is renaming Mt. McKinley, the tallest mountain in the US will be known as Denali. Native Alaskans have pushed for the name change for decades. Denali is the mountain's name  in their native Athabaskan language. It was named as McKinley in 1896 for the man who become (became) America's 25th president. Several lawmakers from his home state of Ohio say the landmark's name was a testimony to President McKinley's service and that they will fight the plan to change it. Another thing President Obama wants to do is draw attention to a controversial issue. He says mounting ice, shrinking glacier, rising sea levels and wildfires in Alaska are all tied to climate change. While environmentalists support the president's focus on the climate, some disagree with his decision to allow oil drilling off Alaska's arctic coast. And while the Obama administration and most scientists say human activities are causing earth average temperatures to warm up, some disagree, saying temperature changes are natural or are caused by factors people can't control. Opposing views reflected by some of the 2016 presidential candidates. Former Secretary of State Hilary Clinton agrees with the Obama's administration on the issue. The democratic party's current front runner has discussed her plan to shift more America's electricity to renewable sources. Meanwhile, businessman Donald Trunk says, the viewpoint that people are causing global warming is a hoax. The republican party's current front runner says the Obama administration has wasted billions of dollars in green energy projects that have failed.