There is no economic imperative that will condemn us to deplete our vital resource base, but neither is there an invisible hand that will prevent us from doing so.

This is our greatest challenge: learning to live in a crowded and interconnected world that is creating unprecedented pressures on human society and on the physical environment.

Let the future say of our generation that we sent forth mighty currents of hope and that we worked together to heal the world.

Soil mapping is one of the pillars to the challenge of sustainable development

All of the incessant debate about development assistance, and whether the rich are doing enough to help the poor, actually concerns less than 1% of rich world income. The effort required of the rich is indeed so slight that to do less is to announce brazenly to a large part of the world: 'You count for nothing.' We should not be surprised, then, if in later years the rich reap the whirlwind of that heartless response.

It's quite possible to arrive in the year 2030 where people are no longer dying of poverty. We could actually help lead a global end-not a reduction, but an end-to absolute poverty...I have always found that a committed, powerful group of leaders, can make a huge difference.

The essence of Africa's crisis is fundamentally its extreme poverty and therefore its inability to mobilize out of its own resources even the barest of minimum resources to address any of the public health crises that Africa faces.