Climate change—2057BMJ 2007; 335 doi: http://dx.doi.org/10.1136/bmj.39420.654583.25 (Published 20 December 2007) Cite this as: BMJ 2007;335:1318
Over 50 years ago, the BMJ asked readers to identify the key advances that had improved health since the first edition was produced in 1840. From a shortlist of 15, introduction of sanitation was voted the most important.1 Today we publish the result of a comparable survey covering the past 50 years. From the 15 shortlisted advances (see box) readers once again put a public health initiative in first place: the role that health professionals played in the campaign to mitigate the ravages of climate change. The BMJ was in the forefront of this campaign, described below.
The 15 shortlisted advances
Action against climate change
Use of dark energy to correct chromosomal abnormalities
Thumbnail sized patient record carried in a subcutaneous pocket of the individuals’ choosing
Manipulation of telomeres to ensure healthy old age
Legislation for end of life decisions
In vitro growth of new organs
Functional MRI enhancement of counselling for depression
Male contraceptive pill
Phagocytic stimulation as a substitute for antibiotics
Walk in diagnostic box giving instantaneous biochemical, haematological, and imaging information
Apparatus for measuring persistent organic pollutant levels in any material
Regulan tablets for regulating the amount of energy burned in metabolism
In 2006, there was growing concern from many experts about the problems that global warming posed for health. Recognising the urgency of the situation, health professionals acted decisively, including forming the influential climate and health council.2
First we informed. Health professionals articulated the gravity and extent of the problem and emphasised that all consequences would be much worse for the two billion globally disadvantaged people, most of whom lived in the non-industrialised countries. We also offered hope, pointing out what is now clear—that moving to low carbon societies would be health improving for all.
Second we affirmed. As health professionals we were among the first to reduce our individual carbon footprints and to persuade the institutions we worked in to do likewise.
Through this leadership role of information and affirmation, we brought together major health professional institutions, inspired academics, ambassadors, architects, engineers, lawyers, and teachers to join us, and used our collective advocacy skills to achieve the crucial breakthrough. The adoption of contraction and convergence3 at the 2009 UNFCC (United Nation Framework Convention on Climate Change) meeting in Copenhagen, and for which Aubrey Meyer, its author, received the Nobel peace prize in 2013, marked the turning point in the campaign.
By 2006, it was clear to all that resolving the problem of global warming needed a global framework and this required the active participation of all people. Those populations in the disadvantaged world, who had little responsibility for global warming, pointed out that any framework would have to deliver them sufficient resources to get similar development benefits to those that the advantaged world had secured through the burning of fossil fuel. Any viable framework had therefore to cap and reduce global carbon emissions while at the same time ensuring that the most disadvantaged people received resources that would enable their development. Of the various contenders, by far the most feasible framework was contraction and convergence.
Alarmed by the increasing frequency and escalating costs of serious climate related events, and alarm accentuated by the demand for oil outstripping the supply,4 the contraction component was readily agreed by the communities of the rich world. Contraction entailed setting a global carbon budget and reducing this annually so that atmospheric levels of carbon dioxide didn’t exceed 450 ppm, giving us a 50:50 chance of avoiding dangerous climate change. The turbulent political times of the early part of this century, however, meant that getting agreement to convergence was more difficult. Persistent pressure from health professionals on all UN bodies, amplified by the outstanding statesman ship from senior leaders of the Mandela mould, was needed to persuade the global decision makers of the efficacy of convergence.
Convergence entailed giving an equal entitlement of carbon to each of the then four billion adult inhabitants of the world. Disadvantaged people, who were almost all low carbon emitters, would have entitlements to sell to the high carbon emitters of the rich north. The market in carbon entitlements would be constrained by the reducing global carbon cap, but within these constraints the disadvantaged, by redeeming their entitlements, would get substantial flows of money. Furthermore, the market signals for all concerned would be toward low carbon investment. There were both philosophical and practical objections raised to this simple and elegant solution. Some pointed to the fact that the entitlement didn’t take into account the amount of fossil fuel burned by the rich nations over the preceding two centuries, though they failed to offer a viable framework that did. Others worried about the practicalities of implementation. Advocates of contraction and convergence responded that any global framework would be difficult to implement. Once the principle was accepted, the numerous agencies with experience of working across the globe would find a way, and so it was. Others objected that the level of corruption in disadvantaged countries meant that no market mechanism could work to the advantage of the poor. Pilot studies in Mozambique, the state of Bihar in India, and Nicaragua refuted this pessimistic view. The unwavering commitment of the professional bodies countered the opposition and, by pointing out the enormous public health benefits of moving toward a more equal low carbon world, won the argument for the convergence component of contraction and convergence.
Contraction and convergence created a global virtuous cycle of activity giving environmental, economic, and social benefit, particularly to the poor. This global virtuous cycle unleashed numerous similar cycles at all levels of society, of which the local cooperative production of renewable energy is perhaps the best known. With a reliable energy supply, people became self sufficient in food, creating a secure local economic base. Female literacy reached 95%, family planning became affordable to all who wanted it, and the money flow enabled the realisation of the millennium goals.5 A proliferation of carbon capture technologies blossomed in the north, creating meaningful work and the psychological boost of realising that each locality could be part of the solution. Cuba, which underwent an enforced decarbonisation of its economy in the early 1990s, by 2006 was the only country in the world that had achieved its UN development targets without exceeding its footprint and gave reassuring testimony of the benefits of moving to a fair shares, low carbon society.6 Thus was set in place the global transformation that we have been privileged to be part of.
As the Africa correspondent of the BMJ, I am writing this article today in a Dar es Salaam where local production and consumption cycles contribute to a vibrant social and economic society that flourishes within environmental limits. The infant mortality is 20/1000, fertility rate 2.1, life expectancy 75, there is universal culturally appropriate education, and a female president oversees a parliament with 50% of women members. The major turbulence of the past four decades is behind us. By the foresight and actions of those pioneers 50 years ago what could have been a global health catastrophe has been averted. It is not surprising that our readers have identified the actions to mitigate climate change as the most important medical advance of the past 50 years.
Competing interests: None declared.
Provenance and peer review: Not commissioned; externally peer reviewed.