Why is Mars so red?

VideoTalk is an exciting new multi-media feature that discusses the questions we hope will be answered by pioneering space exploration. See and hear exactly what evidence we hope to find on the surface and in the atmosphere of this rusty planet.

See the videotalk:

Broadband:
http://www.esa.int/SPECIALS/Video_Talk/index.html

Modem:
http://www.esa.int/SPECIALS/VideoTalk_56K/index.html