So, I happen to know a little bit from my own work about how NASA has been using hydroponics to explore growing food in space.

The main advantage of the NFT system over other forms of hydroponics is that the plant roots are exposed to adequate supplies of water, oxygen and nutrients.

And I really wanted it to be an open project, because hydroponics is one of the fastest growing areas of patenting in the United States right now and could possibly become another area like Monsanto, where we have a lot of corporate intellectual property in the way of people's food.