The amazing effects available in the V5I Ecosystem tells me that with a good Python writer it would be very possible to simulate a waterfall- Take the ocean waves and have them flowing over a cliff- the white water effects would be small white particles flowing along with it. Use the Cumulus cloud Vob object for misty spray, etc... The end effect would be very realistic and of course animatable! Snow- load in some snowflake objects (in freestuff, etc.) and have them flurrying down. The Ecosystem can easily do this with millions of white snowflake instances... Fall Leaves in the wind- five nice fall colored leaves could be the basis for a great "Fall-Autumn Leaves in the Wind" effect using the Ecosystem... I think a lot of great waterfall and weather effects are waiting to happen with the Ecosystem and Python-- perhaps hopefully we will see these in the new Cornucopia Store!