Sometimes when I talk to little children I remind them of the fact that when I was growing up myself, I used to play with frog eggs and tadpoles and I used to walk in the field, I used to literally copy whatever my mother was doing on the land. And that may be the reason why I eventually developed the passion for green and for the Earth. So it is extremely important for adults and especially those who are in charge of cities to make sure that we do not lose touch with the land and with the environment. And especially our children.

When resources are degraded, we start competing for them, whether it is at the local level in Kenya, where we had tribal clashes over land and water, or at the global level, where we are fighting over water, oil, and minerals. So one way to promote peace is to promote sustainable management and equitable distribution of resources.

That's the way I do things when I want to celebrate, I always plant a tree.

What is really important is to educate people how to protect themselves and how to ensure that, despite their poverty, they can get tested and access drugs. So I just hope that those who can will make those drugs available.

First of all, farmers should work with universities and research institutions in the country, and hopefully with the government.

It gradually became clear that the Green Belt Movement's work with communities to repair the degraded environment could not be done effectively without participants embracing a set of core spiritual values.

I think [GMO] is one area where the is a need for legal regulations to make sure that companies - because at the moment, companies are the ones that have this technology - will not use this technology in a way that could adversely affect the people.