


We still pretend that the pursuit of sustainable development can be carried out by gradually reorienting current policies, meanwhile giving the poorer regions a chance to catch up and get their “fair share” of wealth. Perhaps that was
realistic in the 1970s; now it is not. Scientific studies that examine the relation of current demands to the globe’s long-term capacities suggest that humanity is far above its long-term sustainable limits. Neither the current population of almost 7 billion nor the intensive consumption patterns of the richer nations can possibly be maintained even for a few more decades This conclusion is supported generally by many different studies and indicators. Population and consumption will come down during this century – one way or another. Our goal should not be striving to maintain the status quo, but attempting to negotiate a transition that will leave our descendents with some modicum of choice.
New technologies will not do this job alone, nor will modest changes in the current economic system. The challenge we face is to increase dramatically the effective time horizon of decision makers. We confront with warming climate, falling fossil energy supplies, eroding agricultural soils, sinking water tables, and related issues a set of problems that can best be ameliorated through short term sacrifice. And in this connection “short term” means decades.
We do not presently have either a governance system or an economy that can proactively choose several decades of perceived sacrifice in order to achieve better outcomes in the distant future. But we have no alternative to finding them.
At a time of global economic crisis, it is tempting to ignore complex long-term challenges in order to focus on tackling the immediate problems. But the impact of inexorable trends such as climate change, ageing and urbanisation is already
being felt and the approaches developed so far are insuffi cient.
Scientifi c research is constantly generating potential solutions. The challenge is turning the most promising research findings into effective and marketable initiatives, backed by the support of government and the general public. But while co-operation between scientific institutions, companies and policy-makers has improved over the past two decades, the constraints are still huge as the need for co-operation on a global scale grows larger.
Mastering climate change has come to be seen as the paramount challenge of our time. But for all the willingness to discuss measures needed to tackle climate change at a global level, there is a growing worry that we simply cannot solve our climate problems with existing technology alone and that we will need either to change our lifestyles radically or to develop new technological solutions.
Expensive new drugs and sophisticated medical technology have tended to exacerbate rather than ameliorate our two major healthcare challenges: providing more affordable care to ageing populations in the rich world and more accessible healthcare to those in the poor world. But new advances in biomedical science and healthcare technology are calling major aspects of the medical system into question. The genomic revolution could potentially focus the entire industry on patient-centred personalised medicine, with a focus on prevention and targeted cures. This opens up the possibility of a radical rethink of the way we approach healthcare worldwide.
Cities are at the core of our future. More than half of the world’s citizens already live in urban areas and that proportion is expected to rise to 60% by 2030. This unstoppable process raises huge challenges for maintaining quality of life, protecting the environment and sustaining competitiveness in tomorrow’s cities. But it also puts cities at the forefront of solving these problems. And many local policy-makers are taking the lead in working with researchers and innovative businesses to develop and implement solutions.