What permaculturists are doing is the most important activity that any group is doing on the planet. We don't know what details of a truly sustainable future are going to be like, but we need options, we need people experimenting in all kinds of ways and permaculturists are one of the critical gangs that are doing that.

If we have any hope of finding ways for seven billion people to live well on planet with finite resources, we have to learn to use our resources efficiently. Plastic bags are neither efficient nor environmentally friendly.

It's time we stopped ignoring the environment. Let's not let another election go by without making this a high priority.

Salmon farming-the placement of large metal or mesh net cages in the ocean to grow fish-was pioneered in Norway in the 1960s. Since then, the industry has expanded to Scotland, Ireland, Canada, the US, and Chile, but is dominated by the same multinational corporations. Wherever it is practiced, net-cage salmon farming is controversial and raises serious environmental concerns.

The voluntary approach to corporate social responsibility has failed in many cases.

Perhaps the whole world is actually a banquet, to which every living thing is invited. First you come as guests: then eventually you're on the menu.

But human borders mean nothing to air, water, windblown soil or seeds or migrating fish, birds or mammals.