I know hydroponics is the future of agriculture, if we have a chance of keeping our species and the planet in good shape. I was glad to read about a group of German scientists who successfully grew greens, radishes and cucumbers in Antarctica.
Of course they didn’t grow the veg outside, in sub-freezing temperatures. They use optimised lighting and temperature conditions and a closed water system in a greenhouse next to the research station. No soil involved. Take a look at the flickr set of the project, called EDEN-ISS. They expect to be able to regularly harvest 4-5kg of vegetables each week.
The idea isn’t merely to grow vegetables for the scientists at the research station, this is an experiment to see whether it’s possible to grow vegetables on the moon, on Mars, and under harsh climate conditions on Earth.