Will your carry-on bag fit? And other aviation links from the week.

Business Insider says airlines are improving economy class cabins. That's true, though the story mainly focuses on new premium economy seats, like these from Singapore Airlines. Photo: Singapore Airlines. 

Business Insider says airlines are improving economy class cabins. That's true, though the story mainly focuses on new premium economy seats, like these from Singapore Airlines. Photo: Singapore Airlines. 

What's going on this week in the world of airlines? I'm glad you asked. 

Here are some of the stories I have enjoyed this week. 

Will your carry-on fit? If you board last, as you know, it probably won't. The Wall Street Journal points out the obvious. An average Boeing 737-900 can fit 180 passengers, but only about 125 roll-aboard bags. Will airlines solve this problem? Maybe. 

Business Insider says passenger comfort in economy class is improving. Then again, the article focuses mainly on long-haul premium economy seats. So this won't help you much on an American Airlines flight from Chicago to Los Angeles. 

Atlanta Hartsfield-Jackson International Airport is spending $430 million to spruce up its terminals. "The modernization of the domestic terminal and Concourses T, A, B, C and D is expected to take three years to complete," according to the Atlanta Journal-Constitution. 

fivethirtyeight.com founder Nate Silver likes Chicago O'Hare International Airport. "There’s just one big problem," he writes. "O’Hare Airport is a nightmare for delays." Be sure to check out his analysis of the airport's issues. 

The world's cleanest airline? SkyTraxx says it is Eva Air of Taiwan. Do you agree? Daily Mail. 

United will soon train all of its pilots in Denver. The training is now handled in various locations. Denver Post. 

Ethiopian Airlines is now flying between Los Angeles and Dublin. Airline Reporter.