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.

The essential role of the environment is still marginal in discussions about poverty. While we continue to debate these initiatives, environmental degradation, including the loss of biodiversity and topsoil, accelerates, causing development efforts to falter.

What a friend we have in a tree, the tree is the symbol of hope, self improvement and what people can do for themselves.

Unfortunately, the issues of climate change, unlike many other issues, are very subtle because the changes we observe are very, very subtle.

The people are learning that you cannot leave decisions only to leaders. Local groups have to create the political will for change, rather than waiting for others to do things for them. That is where positive, and sustainable, change begins.

We’re constantly being bombarded by problems that we face and sometimes we can get completely overwhelmed. [But] we should always feel like a hummingbird. I may feel insignificant, but I don’t want to be like the other animals watching the planet go down the drain. I’ll be a hummingbird, I’ll do the best I can.

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.