The world and its climate is in a place not envisaged a generation ago, and perhaps it's time more of us started to protect ourselves from escalating prices (and sometimes decreasing quality).

Seeds cost cents each, sometimes less than that - have you ever opened a pack of carrot seeds and seen how many seeds there are?  You don't even need a garden.  We have steadily been increasing our supply of 30L pots as experiments in growing for those who don't have outdoor space.  I planted carrots in one, and if one of our cats had repeatedly, and continually not provided heating from above on the nice empty soil, we would have got a good crop.  In the shape where she didn't sleep, there are really good carrots, ready soon.  Herbs can be grown on windowsills - the list of useful spaces is endless when you start to be creative.