Perlan in NY Times

[Frank Whiteley]

http://www.nytimes.com/2013/10/22/science/quiet-trip-to-the-ozone-hole.html?_r=0

[Piotr Szafranski]

Thanks for highlighting the article. Any thoughts on "why not to use drones?" sentiment in the reader's comments?

[SoaringXCellence]

On Monday, October 21, 2013 2:35:09 PM UTC-7, Piotr Szafranski wrote:
> Thanks for highlighting the article. Any thoughts on "why not to use drones?" sentiment in the reader's comments?

Most of them can't get that high! Also, in the past, glider have been used to insure that the air is not altered by the fuels and heat of the engine.

[Ramy]

A good reason is provided at the end of the article.

Ramy