Listen to the story about how spiders fly, while reading along.
The research at Rothamsted, discussed in your assignment paper, was reported on by the BBC in 2006. Research from last year (2013), reported on by Discover (original paper here: PDF) shows that the mechanism is probably more complicated than either wind or turbulence can explain. Peter Gorham at the University of Hawaii proposes an electrical charge in the silk as a better explanation for these feats of arachnid flight.
You can see a video of a small spider taking off, with an explanation in Japanese.