that is hydroponics, nothing about that violates the laws of nature. you can get the same size radishes in normal ground if you care for them and it is a good season. and rockwool is a very energy/water inefficient thing to make. there are better more ecologically sound mediums available though I agree with his tip of not eating it. I am very dissapointed. good thread will contribute at a later time.
Not funny but I looked up the extended version of some Gundam ending and was not disappointed by the results.
