It was easy to persecute me without people feeling ashamed. It was easy to vilify me and project me as a woman who was not following the tradition of a 'good African woman' and as a highly educated elitist who was trying to show innocent African women ways of doing things that were not acceptable to African men.

We tend to put the environment last because we think the first thing we have to do is eliminate poverty and send children to school and provide health.

We see that the environment is something to exploit, because we see the environment in terms of minerals for example, or forests, or even raw materials that we produce on our land, or even land itself. We see it in terms of what we can exploit rather than the medium in which all of these activities have to take place.

Nobody in the world is completely dependent on another person, but we are all interdependent.

Now when Nile perch was introduced [into Lake Victoria], I don't think enough research was done; maybe it was done, maybe it was not. But Nile perch is a huge fish. So it ate all the little fish, and it grew into a monster which the local people could not fish with their little boats and their little nets.

I'm sure the government of Qatar is not coming in to grow food for the people of Kenya; it's coming to grow food to sell. If it can also sell to the people of Kenya, well, then good. I think that the moves can be helpful, but I think that the history that Africa knows, as I say in my book, has been a history of exploitation.

We have a responsibility to protect the rights of generations, of all species, that cannot speak for themselves today. The global challenge of climate change requires that we ask no less of our leaders, or ourselves.