You might feel that what has already been said is speculative enough. Others have already said as much, but all really new ideas seem strange and unsettling at first. Only time will tell.

Now let's look at the really speculative stuff....

Rivers and Lakes of liquid CO2 on Early Mars
The crustal dichotomy as evidence of a Northern CO2 Ocean
Possible Iceworld conditions for the Early Earth
The origin of life in a CO2-H2O system
Some Dust Storms on Mars may result from Avalanches
 
 
 

      Created: May 2002
      Last modified: May 2002
      Authorised by:  Head, Earth Sciences

      Maintained by: Nick Hoffman
      Email: nhoffman@unimelb.edu.au