What a fabulous assignment! I've literally dropped my jaw at some of the entries I've seen here this week.
Gas Flowers
Taken: 20 Nov 2009
Camera: Canon EOS Digital Rebel XT
Lens: Sigma 28-200
Exposure: 0.5
Aperture: f/22.0
Focal Length: 55 mm
ISO Speed: 1600
Exposure Bias: 0 EV
Flash: Off, Did not fire
full exif data here:
Flickr: More detail about gas flowers