Martian Gravity experiment

http://www.cnn.com/2001/TECH/space/09/03/astromice.mars/index.html

Well, it seems that finally the Zubrinites are beginning to address the
problem of partial gravity in Mars. This experiment is also interesting for
us, O'Neilers: if it is proven that partial gravities are ok, then smaller
habitats would be possible, for example.

Lucio Coelho