Norma Fiorentino's water well blew up on New Year's Day 2009, throwing cement slabs into the air.

VOA: standard.2010.01.02

I don't know how well you can make it out but there's a little broom guy there with glasses, playing air guitar with his broom, and I guess this is meant to capture the spirit of the contributors.

我不知道你们能理解到什么程度,但是在那儿有一个戴着眼镜的男孩，用他的扫帚在弹着吉他，我猜这个的寓意是指要抓住那些发起人的精神内涵。

耶鲁公开课 - 现代诗歌课程节选

It says air quality is an important factor as well.

VOA: standard.2009.03.23

Aircraft consultant Richard Aboulafia says while air travel appears to be making a comeback, demand for first class tickets remains sluggish and airline revenues are well below 2008 peak levels.

VOA: standard.2010.03.30

"This was a hugely significant attack plan. With that number of aircraft, with the types of destination that were being talked about, it is conceivable to think of upwards of 2,000 casualties in the air depending on the point of detonation whether others would have been caught on the ground as well.

VOA: standard.2009.09.07