It's a moral question about whether we have the right to exterminate species.

The human population can no longer be allowed to grow in the same old uncontrollable way. If we do not take charge of our population size, then nature will do it for us and it is the poor people of the world who will suffer most

Nothing in the natural world makes sense - except when seen in the light of evolution

I'm no longer sceptical. I no longer have any doubt at all. I think climate change is the major challenge facing the world.

How could I look my grandchildren in the eye and say I knew what was happening to the world and did nothing.

Instead of controlling the environment for the benefit of the population, perhaps we should control the population to ensure the survival of our environment

Since when has Finland been a rotten place to live in?